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10121201213 = 101109941977
BaseRepresentation
bin10010110110100010…
…10100011000111101
3222010100211021221012
421123101110120331
5131212011414323
64352152245005
7505545535154
oct113321243075
928110737835
1010121201213
114324177302
121b656a0765
13c53b45076
146c02b259b
153e384e678
hex25b45463d

10121201213 has 16 divisors (see below), whose sum is σ = 10336716720. Its totient is φ = 9908352000.

The previous prime is 10121201177. The next prime is 10121201227. The reversal of 10121201213 is 31210212101.

10121201213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 4393436089 + 5727765124 = 66283^2 + 75682^2 .

It is a cyclic number.

It is not a de Polignac number, because 10121201213 - 222 = 10117006909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10120201213) 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 15 ways as a sum of consecutive naturals, for example, 10358981 + ... + 10359957.

It is an arithmetic number, because the mean of its divisors is an integer number (646044795).

Almost surely, 210121201213 is an apocalyptic number.

It is an amenable number.

10121201213 is a deficient number, since it is larger than the sum of its proper divisors (215515507).

10121201213 is a wasteful number, since it uses less digits than its factorization.

10121201213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2128.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 10121201213 its reverse (31210212101), we get a palindrome (41331413314).

The spelling of 10121201213 in words is "ten billion, one hundred twenty-one million, two hundred one thousand, two hundred thirteen".

Divisors: 1 101 109 941 977 11009 95041 98677 102569 106493 919357 10359469 10755793 92855057 100209913 10121201213