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101212101012 = 22311766758341
BaseRepresentation
bin101111001000010110…
…1100001100110010100
3100200020122102110020210
41132100231201212110
53124240244213022
6114255102325420
710212062443461
oct1362055414624
9320218373223
10101212101012
1139a18657580
1217747889870
13970c97cb89
144c82020668
152975865a0c
hex1790b61994

101212101012 has 24 divisors (see below), whose sum is σ = 257630802912. Its totient is φ = 30670333600.

The previous prime is 101212101007. The next prime is 101212101019. The reversal of 101212101012 is 210101212101.

101212101012 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101212101019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 383379039 + ... + 383379302.

It is an arithmetic number, because the mean of its divisors is an integer number (10734616788).

Almost surely, 2101212101012 is an apocalyptic number.

101212101012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

101212101012 is an abundant number, since it is smaller than the sum of its proper divisors (156418701900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

101212101012 is a wasteful number, since it uses less digits than its factorization.

101212101012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766758359 (or 766758357 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 101212101012 its reverse (210101212101), we get a palindrome (311313313113).

The spelling of 101212101012 in words is "one hundred one billion, two hundred twelve million, one hundred one thousand, twelve".

Divisors: 1 2 3 4 6 11 12 22 33 44 66 132 766758341 1533516682 2300275023 3067033364 4600550046 8434341751 9201100092 16868683502 25303025253 33737367004 50606050506 101212101012