21332133212 has 48 divisors (see below), whose sum is σ = 41222859552. Its totient is φ = 9596267520.

The previous prime is 21332133211. The next prime is 21332133269. The reversal of 21332133212 is 21233123312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21332133211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2539283 + ... + 2547669.

It is an arithmetic number, because the mean of its divisors is an integer number (858809574).

Almost surely, 2^21332133212 is an apocalyptic number.

It is an amenable number.

21332133212 is a deficient number, since it is larger than the sum of its proper divisors (19890726340).

21332133212 is a wasteful number, since it uses less digits than its factorization.

21332133212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9638 (or 9636 counting only the distinct ones).

The product of its digits is 1296, while the sum is 23.

Adding to 21332133212 its reverse (21233123312), we get a palindrome (42565256524).

The spelling of 21332133212 in words is "twenty-one billion, three hundred thirty-two million, one hundred thirty-three thousand, two hundred twelve".