211155030 has 24 divisors (see below), whose sum is σ = 549003312. Its totient is φ = 56307984.

The previous prime is 211155029. The next prime is 211155083. The reversal of 211155030 is 30551112.

211155030 is a `hidden beast` number, since 2 + 111 + 550 + 3 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 211154994 and 211155012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1172994 + ... + 1173173.

It is an arithmetic number, because the mean of its divisors is an integer number (22875138).

Almost surely, 2^211155030 is an apocalyptic number.

211155030 is an abundant number, since it is smaller than the sum of its proper divisors (337848282).

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

211155030 is a wasteful number, since it uses less digits than its factorization.

211155030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2346180 (or 2346177 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 211155030 is about 14531.1744191583. The cubic root of 211155030 is about 595.4799507660.

The spelling of 211155030 in words is "two hundred eleven million, one hundred fifty-five thousand, thirty".