212018370 has 32 divisors (see below), whose sum is σ = 530969472. Its totient is φ = 54079872.

The previous prime is 212018369. The next prime is 212018377. The reversal of 212018370 is 73810212.

It is a self number, because there is not a number n which added to its sum of digits gives 212018370.

It is not an unprimeable number, because it can be changed into a prime (212018377) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 152947 + ... + 154326.

It is an arithmetic number, because the mean of its divisors is an integer number (16592796).

Almost surely, 2^212018370 is an apocalyptic number.

212018370 is an abundant number, since it is smaller than the sum of its proper divisors (318951102).

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

212018370 is a wasteful number, since it uses less digits than its factorization.

212018370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307306.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 212018370 is about 14560.8505932861. The cubic root of 212018370 is about 596.2904178219.

Adding to 212018370 its reverse (73810212), we get a palindrome (285828582).

The spelling of 212018370 in words is "two hundred twelve million, eighteen thousand, three hundred seventy".