99931406212 has 24 divisors (see below), whose sum is σ = 191503553472. Its totient is φ = 45250648800.

The previous prime is 99931406209. The next prime is 99931406279. The reversal of 99931406212 is 21260413999.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

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, 4306239 + ... + 4329382.

It is an arithmetic number, because the mean of its divisors is an integer number (7979314728).

Almost surely, 2^99931406212 is an apocalyptic number.

It is an amenable number.

99931406212 is a deficient number, since it is larger than the sum of its proper divisors (91572147260).

99931406212 is a wasteful number, since it uses less digits than its factorization.

99931406212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8635899 (or 8635897 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 46.

The spelling of 99931406212 in words is "ninety-nine billion, nine hundred thirty-one million, four hundred six thousand, two hundred twelve".