21222235062504 has 96 divisors (see below), whose sum is σ = 65886323730240. Its totient is φ = 6045176966400.

The previous prime is 21222235062499. The next prime is 21222235062521. The reversal of 21222235062504 is 40526053222212.

21222235062504 is a `hidden beast` number, since 2 + 1 + 2 + 2 + 2 + 23 + 5 + 0 + 625 + 0 + 4 = 666.

It is a super-2 number, since 2×21222235062504² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63439837 + ... + 63773484.

It is an arithmetic number, because the mean of its divisors is an integer number (686315872190).

Almost surely, 2^{21222235062504} is an apocalyptic number.

21222235062504 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21222235062504 is an abundant number, since it is smaller than the sum of its proper divisors (44664088667736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21222235062504 is a wasteful number, since it uses less digits than its factorization.

21222235062504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127213671 (or 127213664 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

Adding to 21222235062504 its reverse (40526053222212), we get a palindrome (61748288284716).

The spelling of 21222235062504 in words is "twenty-one trillion, two hundred twenty-two billion, two hundred thirty-five million, sixty-two thousand, five hundred four".