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101212012212 = 22311374640127
BaseRepresentation
bin101111001000010110…
…1001011111010110100
3100200020122020221102220
41132100231023322310
53124240233342322
6114255100402340
710212061623543
oct1362055137264
9320218227386
10101212012212
1139a185a6893
12177478463b0
13970c94b62c
144c81dda15a
15297584955c
hex1790b4beb4

101212012212 has 24 divisors (see below), whose sum is σ = 238251288576. Its totient is φ = 33438776448.

The previous prime is 101212012211. The next prime is 101212012219. The reversal of 101212012212 is 212210212101.

It is a junction number, because it is equal to n+sod(n) for n = 101212012191 and 101212012200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101212012211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37318708 + ... + 37321419.

It is an arithmetic number, because the mean of its divisors is an integer number (9927137024).

Almost surely, 2101212012212 is an apocalyptic number.

101212012212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

101212012212 is an abundant number, since it is smaller than the sum of its proper divisors (137039276364).

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

101212012212 is a wasteful number, since it uses less digits than its factorization.

101212012212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74640247 (or 74640245 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 101212012212 its reverse (212210212101), we get a palindrome (313422224313).

The spelling of 101212012212 in words is "one hundred one billion, two hundred twelve million, twelve thousand, two hundred twelve".

Divisors: 1 2 3 4 6 12 113 226 339 452 678 1356 74640127 149280254 223920381 298560508 447840762 895681524 8434334351 16868668702 25303003053 33737337404 50606006106 101212012212