212810122 has 16 divisors (see below), whose sum is σ = 380679552. Its totient is φ = 87238800.

The previous prime is 212810113. The next prime is 212810123. The reversal of 212810122 is 221018212.

It is a self number, because there is not a number n which added to its sum of digits gives 212810122.

It is not an unprimeable number, because it can be changed into a prime (212810123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 330129 + ... + 330772.

It is an arithmetic number, because the mean of its divisors is an integer number (23792472).

Almost surely, 2^212810122 is an apocalyptic number.

212810122 is a deficient number, since it is larger than the sum of its proper divisors (167869430).

212810122 is a wasteful number, since it uses less digits than its factorization.

212810122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660933.

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 212810122 is about 14588.0129558484. The cubic root of 212810122 is about 597.0317492867.

Adding to 212810122 its reverse (221018212), we get a palindrome (433828334).

The spelling of 212810122 in words is "two hundred twelve million, eight hundred ten thousand, one hundred twenty-two".