10523120121 has 6 divisors (see below), whose sum is σ = 15200062410. Its totient is φ = 7015413408.

The previous prime is 10523120117. The next prime is 10523120123. The reversal of 10523120121 is 12102132501.

10523120121 is a `hidden beast` number, since 1 + 0 + 523 + 1 + 20 + 121 = 666.

It can be written as a sum of positive squares in only one way, i.e., 5788166400 + 4734953721 = 76080^2 + 68811^2 .

It is not a de Polignac number, because 10523120121 - 2² = 10523120117 is a prime.

It is a super-2 number, since 2×10523120121² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10523120094 and 10523120103.

It is not an unprimeable number, because it can be changed into a prime (10523120123) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 584617776 + ... + 584617793.

It is an arithmetic number, because the mean of its divisors is an integer number (2533343735).

Almost surely, 2^10523120121 is an apocalyptic number.

It is an amenable number.

10523120121 is a deficient number, since it is larger than the sum of its proper divisors (4676942289).

10523120121 is a wasteful number, since it uses less digits than its factorization.

10523120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1169235575 (or 1169235572 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

Adding to 10523120121 its reverse (12102132501), we get a palindrome (22625252622).

The spelling of 10523120121 in words is "ten billion, five hundred twenty-three million, one hundred twenty thousand, one hundred twenty-one".