21312010196 has 12 divisors (see below), whose sum is σ = 37297473780. Its totient is φ = 10655589120.

The previous prime is 21312010183. The next prime is 21312010201. The reversal of 21312010196 is 69101021312.

It can be written as a sum of positive squares in 2 ways, for example, as 6290076100 + 15021934096 = 79310^2 + 122564^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30650 + ... + 208718.

It is an arithmetic number, because the mean of its divisors is an integer number (3108122815).

Almost surely, 2^21312010196 is an apocalyptic number.

It is an amenable number.

21312010196 is a deficient number, since it is larger than the sum of its proper divisors (15985463584).

21312010196 is a wasteful number, since it uses less digits than its factorization.

21312010196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207994 (or 207992 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 26.

The spelling of 21312010196 in words is "twenty-one billion, three hundred twelve million, ten thousand, one hundred ninety-six".