10504010121 has 24 divisors (see below), whose sum is σ = 15403813152. Its totient is φ = 6362136000.

The previous prime is 10504010117. The next prime is 10504010171. The reversal of 10504010121 is 12101040501.

It is a happy number.

It is not a de Polignac number, because 10504010121 - 2² = 10504010117 is a prime.

It is a super-2 number, since 2×10504010121² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10504010121.

It is not an unprimeable number, because it can be changed into a prime (10504010171) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 645730 + ... + 661796.

It is an arithmetic number, because the mean of its divisors is an integer number (641825548).

Almost surely, 2^10504010121 is an apocalyptic number.

10504010121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10504010121 is a deficient number, since it is larger than the sum of its proper divisors (4899803031).

10504010121 is a wasteful number, since it uses less digits than its factorization.

10504010121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17893 (or 17882 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 15.

Adding to 10504010121 its reverse (12101040501), we get a palindrome (22605050622).

The spelling of 10504010121 in words is "ten billion, five hundred four million, ten thousand, one hundred twenty-one".