21332020012 has 24 divisors (see below), whose sum is σ = 37429539840. Its totient is φ = 10637905920.

The previous prime is 21332020007. The next prime is 21332020051. The reversal of 21332020012 is 21002023312.

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, 2521173 + ... + 2529619.

It is an arithmetic number, because the mean of its divisors is an integer number (1559564160).

Almost surely, 2^21332020012 is an apocalyptic number.

It is an amenable number.

21332020012 is a deficient number, since it is larger than the sum of its proper divisors (16097519828).

21332020012 is a wasteful number, since it uses less digits than its factorization.

21332020012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10041 (or 10039 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 21332020012 its reverse (21002023312), we get a palindrome (42334043324).

It can be divided in two parts, 213320 and 20012, that added together give a palindrome (233332).

The spelling of 21332020012 in words is "twenty-one billion, three hundred thirty-two million, twenty thousand, twelve".