211139888 has 30 divisors (see below), whose sum is σ = 412651044. Its totient is φ = 104656992.

The previous prime is 211139869. The next prime is 211139891. The reversal of 211139888 is 888931112.

211139888 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 308795 + ... + 309477.

Almost surely, 2^211139888 is an apocalyptic number.

It is an amenable number.

211139888 is a deficient number, since it is larger than the sum of its proper divisors (201511156).

211139888 is an equidigital number, since it uses as much as digits as its factorization.

211139888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 969 (or 824 counting only the distinct ones).

The product of its digits is 27648, while the sum is 41.

The square root of 211139888 is about 14530.6533920536. The cubic root of 211139888 is about 595.4657164016.

The spelling of 211139888 in words is "two hundred eleven million, one hundred thirty-nine thousand, eight hundred eighty-eight".