122122220212 has 12 divisors (see below), whose sum is σ = 213796323076. Its totient is φ = 61037556480.

The previous prime is 122122220203. The next prime is 122122220237. The reversal of 122122220212 is 212022221221.

It can be written as a sum of positive squares in 2 ways, for example, as 83010829456 + 39111390756 = 288116^2 + 197766^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 122122220212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5876739 + ... + 5897482.

Almost surely, 2^122122220212 is an apocalyptic number.

It is an amenable number.

122122220212 is a deficient number, since it is larger than the sum of its proper divisors (91674102864).

122122220212 is a wasteful number, since it uses less digits than its factorization.

122122220212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11776818 (or 11776816 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 122122220212 its reverse (212022221221), we get a palindrome (334144441433).

The spelling of 122122220212 in words is "one hundred twenty-two billion, one hundred twenty-two million, two hundred twenty thousand, two hundred twelve".