212313020122 has 12 divisors (see below), whose sum is σ = 370464555690. Its totient is φ = 90991294296.

The previous prime is 212313020099. The next prime is 212313020123. The reversal of 212313020122 is 221020313212.

It can be written as a sum of positive squares in only one way, i.e., 116485007401 + 95828012721 = 341299^2 + 309561^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 212313020122.

It is not an unprimeable number, because it can be changed into a prime (212313020123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1083229597 + ... + 1083229792.

Almost surely, 2^212313020122 is an apocalyptic number.

212313020122 is a deficient number, since it is larger than the sum of its proper divisors (158151535568).

212313020122 is a wasteful number, since it uses less digits than its factorization.

212313020122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2166459405 (or 2166459398 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 212313020122 its reverse (221020313212), we get a palindrome (433333333334).

The spelling of 212313020122 in words is "two hundred twelve billion, three hundred thirteen million, twenty thousand, one hundred twenty-two".