212018190 has 64 divisors (see below), whose sum is σ = 518192640. Its totient is φ = 55510400.

The previous prime is 212018167. The next prime is 212018201. The reversal of 212018190 is 91810212.

It is a super-2 number, since 2×212018190² = 89903425781752200, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 212018190.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 505801 + ... + 506219.

It is an arithmetic number, because the mean of its divisors is an integer number (8096760).

Almost surely, 2^212018190 is an apocalyptic number.

212018190 is an abundant number, since it is smaller than the sum of its proper divisors (306174450).

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

212018190 is a wasteful number, since it uses less digits than its factorization.

212018190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697.

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

The square root of 212018190 is about 14560.8444123272. The cubic root of 212018190 is about 596.2902490751.

The spelling of 212018190 in words is "two hundred twelve million, eighteen thousand, one hundred ninety".