211979996 has 12 divisors (see below), whose sum is σ = 371224560. Its totient is φ = 105915840.

The previous prime is 211979959. The next prime is 211980001. The reversal of 211979996 is 699979112.

211979996 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 11840 + ... + 23751.

It is an arithmetic number, because the mean of its divisors is an integer number (30935380).

Almost surely, 2^211979996 is an apocalyptic number.

It is an amenable number.

211979996 is a deficient number, since it is larger than the sum of its proper divisors (159244564).

211979996 is a wasteful number, since it uses less digits than its factorization.

211979996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37084 (or 37082 counting only the distinct ones).

The product of its digits is 551124, while the sum is 53.

The square root of 211979996 is about 14559.5328221753. The cubic root of 211979996 is about 596.2544407049.

The spelling of 211979996 in words is "two hundred eleven million, nine hundred seventy-nine thousand, nine hundred ninety-six".