80121912 has 32 divisors (see below), whose sum is σ = 215713680. Its totient is φ = 24652800.

The previous prime is 80121907. The next prime is 80121929. The reversal of 80121912 is 21912108.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

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, 128089 + ... + 128712.

Almost surely, 2^80121912 is an apocalyptic number.

It is an amenable number.

80121912 is an abundant number, since it is smaller than the sum of its proper divisors (135591768).

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

80121912 is a wasteful number, since it uses less digits than its factorization.

80121912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256823 (or 256819 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 24.

The square root of 80121912 is about 8951.0844035793. The cubic root of 80121912 is about 431.1057031202.

The spelling of 80121912 in words is "eighty million, one hundred twenty-one thousand, nine hundred twelve".