21323333212 has 24 divisors (see below), whose sum is σ = 38952547200. Its totient is φ = 10194374256.

The previous prime is 21323333131. The next prime is 21323333249. The reversal of 21323333212 is 21233332312.

It is a congruent number.

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, 218239 + ... + 300457.

It is an arithmetic number, because the mean of its divisors is an integer number (1623022800).

Almost surely, 2^21323333212 is an apocalyptic number.

It is an amenable number.

21323333212 is a deficient number, since it is larger than the sum of its proper divisors (17629213988).

21323333212 is a wasteful number, since it uses less digits than its factorization.

21323333212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85065 (or 85063 counting only the distinct ones).

The product of its digits is 3888, while the sum is 25.

Adding to 21323333212 its reverse (21233332312), we get a palindrome (42556665524).

The spelling of 21323333212 in words is "twenty-one billion, three hundred twenty-three million, three hundred thirty-three thousand, two hundred twelve".