21332331412 has 24 divisors (see below), whose sum is σ = 43265577600. Its totient is φ = 9013660320.

The previous prime is 21332331379. The next prime is 21332331431. The reversal of 21332331412 is 21413323312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5363287 + ... + 5367262.

It is an arithmetic number, because the mean of its divisors is an integer number (1802732400).

Almost surely, 2^21332331412 is an apocalyptic number.

It is an amenable number.

21332331412 is an abundant number, since it is smaller than the sum of its proper divisors (21933246188).

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

21332331412 is a wasteful number, since it uses less digits than its factorization.

21332331412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10730631 (or 10730629 counting only the distinct ones).

The product of its digits is 2592, while the sum is 25.

Adding to 21332331412 its reverse (21413323312), we get a palindrome (42745654724).

The spelling of 21332331412 in words is "twenty-one billion, three hundred thirty-two million, three hundred thirty-one thousand, four hundred twelve".