21020032223112 has 32 divisors (see below), whose sum is σ = 56592394447680. Its totient is φ = 6467702222400.

The previous prime is 21020032223107. The next prime is 21020032223161. The reversal of 21020032223112 is 21132223002012.

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, 33685948764 + ... + 33685949387.

It is an arithmetic number, because the mean of its divisors is an integer number (1768512326490).

Almost surely, 2^{21020032223112} is an apocalyptic number.

It is an amenable number.

21020032223112 is an abundant number, since it is smaller than the sum of its proper divisors (35572362224568).

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

21020032223112 is a wasteful number, since it uses less digits than its factorization.

21020032223112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67371898173 (or 67371898169 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 21020032223112 its reverse (21132223002012), we get a palindrome (42152255225124).

The spelling of 21020032223112 in words is "twenty-one trillion, twenty billion, thirty-two million, two hundred twenty-three thousand, one hundred twelve".