21233031115040 has 96 divisors (see below), whose sum is σ = 51979361575680. Its totient is φ = 8190686859264.

The previous prime is 21233031115001. The next prime is 21233031115063. The reversal of 21233031115040 is 4051113033212.

It is a super-2 number, since 2×21233031115040² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18989369 + ... + 20076408.

It is an arithmetic number, because the mean of its divisors is an integer number (541451683080).

Almost surely, 2^{21233031115040} is an apocalyptic number.

21233031115040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21233031115040 is an abundant number, since it is smaller than the sum of its proper divisors (30746330460640).

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

21233031115040 is a wasteful number, since it uses less digits than its factorization.

21233031115040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39065914 (or 39065906 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

Adding to 21233031115040 its reverse (4051113033212), we get a palindrome (25284144148252).

The spelling of 21233031115040 in words is "twenty-one trillion, two hundred thirty-three billion, thirty-one million, one hundred fifteen thousand, forty".