10104220521 has 12 divisors (see below), whose sum is σ = 15453513972. Its totient is φ = 6339902976.

The previous prime is 10104220519. The next prime is 10104220531. The reversal of 10104220521 is 12502240101.

10104220521 is a `hidden beast` number, since 101 + 0 + 42 + 2 + 0 + 521 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 8642305296 + 1461915225 = 92964^2 + 38235^2 .

It is not a de Polignac number, because 10104220521 - 2¹ = 10104220519 is a prime.

It is a super-2 number, since 2×10104220521² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10104220494 and 10104220503.

It is not an unprimeable number, because it can be changed into a prime (10104220531) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33020176 + ... + 33020481.

It is an arithmetic number, because the mean of its divisors is an integer number (1287792831).

Almost surely, 2^10104220521 is an apocalyptic number.

It is an amenable number.

10104220521 is a deficient number, since it is larger than the sum of its proper divisors (5349293451).

10104220521 is a wasteful number, since it uses less digits than its factorization.

10104220521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66040680 (or 66040677 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

Adding to 10104220521 its reverse (12502240101), we get a palindrome (22606460622).

The spelling of 10104220521 in words is "ten billion, one hundred four million, two hundred twenty thousand, five hundred twenty-one".