211972972 has 12 divisors (see below), whose sum is σ = 379579816. Its totient is φ = 103521600.

The previous prime is 211972967. The next prime is 211972973. The reversal of 211972972 is 279279112.

211972972 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (211972973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 616029 + ... + 616372.

Almost surely, 2^211972972 is an apocalyptic number.

It is an amenable number.

211972972 is a deficient number, since it is larger than the sum of its proper divisors (167606844).

211972972 is a wasteful number, since it uses less digits than its factorization.

211972972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1232448 (or 1232446 counting only the distinct ones).

The product of its digits is 31752, while the sum is 40.

The square root of 211972972 is about 14559.2916036461. The cubic root of 211972972 is about 596.2478549617.

The spelling of 211972972 in words is "two hundred eleven million, nine hundred seventy-two thousand, nine hundred seventy-two".