101010991992 has 32 divisors (see below), whose sum is σ = 254762243280. Its totient is φ = 33372362240.

The previous prime is 101010991973. The next prime is 101010991997. The reversal of 101010991992 is 299199010101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101010991997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18620259 + ... + 18625682.

Almost surely, 2^101010991992 is an apocalyptic number.

101010991992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

101010991992 is an abundant number, since it is smaller than the sum of its proper divisors (153751251288).

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

101010991992 is a wasteful number, since it uses less digits than its factorization.

101010991992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37246063 (or 37246059 counting only the distinct ones).

The product of its (nonzero) digits is 13122, while the sum is 42.

The spelling of 101010991992 in words is "one hundred one billion, ten million, nine hundred ninety-one thousand, nine hundred ninety-two".