21330025274056 has 32 divisors (see below), whose sum is σ = 40154656651200. Its totient is φ = 10622190104640.

The previous prime is 21330025274011. The next prime is 21330025274081. The reversal of 21330025274056 is 65047252003312.

It is a super-2 number, since 2×21330025274056² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2249655 + ... + 6908038.

It is an arithmetic number, because the mean of its divisors is an integer number (1254833020350).

Almost surely, 2^{21330025274056} is an apocalyptic number.

It is an amenable number.

21330025274056 is a deficient number, since it is larger than the sum of its proper divisors (18824631377144).

21330025274056 is a wasteful number, since it uses less digits than its factorization.

21330025274056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9158869 (or 9158865 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 40.

Adding to 21330025274056 its reverse (65047252003312), we get a palindrome (86377277277368).

The spelling of 21330025274056 in words is "twenty-one trillion, three hundred thirty billion, twenty-five million, two hundred seventy-four thousand, fifty-six".