8630402121 has 64 divisors (see below), whose sum is σ = 14810480640. Its totient is φ = 4908913920.

The previous prime is 8630402047. The next prime is 8630402141. The reversal of 8630402121 is 1212040368.

8630402121 is a `hidden beast` number, since 8 + 630 + 4 + 0 + 2 + 1 + 21 = 666.

It is not a de Polignac number, because 8630402121 - 2⁷ = 8630401993 is a prime.

It is a super-2 number, since 2×8630402121² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8630402141) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1931536 + ... + 1935998.

It is an arithmetic number, because the mean of its divisors is an integer number (231413760).

Almost surely, 2^8630402121 is an apocalyptic number.

It is an amenable number.

8630402121 is a deficient number, since it is larger than the sum of its proper divisors (6180078519).

8630402121 is a wasteful number, since it uses less digits than its factorization.

8630402121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4883 (or 4877 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 8630402121 is about 92899.9575941776. The cubic root of 8630402121 is about 2051.2110330856.

Adding to 8630402121 its reverse (1212040368), we get a palindrome (9842442489).

The spelling of 8630402121 in words is "eight billion, six hundred thirty million, four hundred two thousand, one hundred twenty-one".