21392929412 has 12 divisors (see below), whose sum is σ = 37448229840. Its totient is φ = 10693435176.

The previous prime is 21392929399. The next prime is 21392929433. The reversal of 21392929412 is 21492929312.

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 3 ways as a sum of consecutive naturals, for example, 741458 + ... + 769769.

It is an arithmetic number, because the mean of its divisors is an integer number (3120685820).

Almost surely, 2^21392929412 is an apocalyptic number.

It is an amenable number.

21392929412 is a deficient number, since it is larger than the sum of its proper divisors (16055300428).

21392929412 is a wasteful number, since it uses less digits than its factorization.

21392929412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1514770 (or 1514768 counting only the distinct ones).

The product of its digits is 139968, while the sum is 44.

The spelling of 21392929412 in words is "twenty-one billion, three hundred ninety-two million, nine hundred twenty-nine thousand, four hundred twelve".