21032331211212 has 24 divisors (see below), whose sum is σ = 49076822076912. Its totient is φ = 7010579558400.

The previous prime is 21032331211207. The next prime is 21032331211253. The reversal of 21032331211212 is 21211213323012.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24244989 + ... + 25097492.

It is an arithmetic number, because the mean of its divisors is an integer number (2044867586538).

Almost surely, 2^{21032331211212} is an apocalyptic number.

It is an amenable number.

21032331211212 is an abundant number, since it is smaller than the sum of its proper divisors (28044490865700).

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

21032331211212 is a wasteful number, since it uses less digits than its factorization.

21032331211212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49378009 (or 49378007 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 21032331211212 its reverse (21211213323012), we get a palindrome (42243544534224).

The spelling of 21032331211212 in words is "twenty-one trillion, thirty-two billion, three hundred thirty-one million, two hundred eleven thousand, two hundred twelve".