212122020122 has 16 divisors (see below), whose sum is σ = 331667503200. Its totient is φ = 101622022320.

The previous prime is 212122020119. The next prime is 212122020179. The reversal of 212122020122 is 221020221212.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 212122020122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13951472 + ... + 13966667.

It is an arithmetic number, because the mean of its divisors is an integer number (20729218950).

Almost surely, 2^212122020122 is an apocalyptic number.

212122020122 is a deficient number, since it is larger than the sum of its proper divisors (119545483078).

212122020122 is a wasteful number, since it uses less digits than its factorization.

212122020122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27918301.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 212122020122 its reverse (221020221212), we get a palindrome (433142241334).

The spelling of 212122020122 in words is "two hundred twelve billion, one hundred twenty-two million, twenty thousand, one hundred twenty-two".