21212032111012 has 12 divisors (see below), whose sum is σ = 37121410600960. Its totient is φ = 10605914796456.

The previous prime is 21212032110949. The next prime is 21212032111037. The reversal of 21212032111012 is 21011123021212.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24842448 + ... + 25682119.

Almost surely, 2^{21212032111012} is an apocalyptic number.

It is an amenable number.

21212032111012 is a deficient number, since it is larger than the sum of its proper divisors (15909378489948).

21212032111012 is a wasteful number, since it uses less digits than its factorization.

21212032111012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50629530 (or 50629528 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 21212032111012 its reverse (21011123021212), we get a palindrome (42223155132224).

The spelling of 21212032111012 in words is "twenty-one trillion, two hundred twelve billion, thirty-two million, one hundred eleven thousand, twelve".