21153025100352 has 56 divisors (see below), whose sum is σ = 57332436954912. Its totient is φ = 6879032550400.

The previous prime is 21153025100351. The next prime is 21153025100387. The reversal of 21153025100352 is 25300152035112.

It is a super-2 number, since 2×21153025100352² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21153025100351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1343553174 + ... + 1343568917.

It is an arithmetic number, because the mean of its divisors is an integer number (1023793517052).

Almost surely, 2^{21153025100352} is an apocalyptic number.

It is an amenable number.

21153025100352 is an abundant number, since it is smaller than the sum of its proper divisors (36179411854560).

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

21153025100352 is a wasteful number, since it uses less digits than its factorization.

21153025100352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2687122147 (or 2687122137 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 30.

Adding to 21153025100352 its reverse (25300152035112), we get a palindrome (46453177135464).

The spelling of 21153025100352 in words is "twenty-one trillion, one hundred fifty-three billion, twenty-five million, one hundred thousand, three hundred fifty-two".