122222222222212 has 24 divisors (see below), whose sum is σ = 244547281954304. Its totient is φ = 52358915771712.

The previous prime is 122222222222173. The next prime is 122222222222227. The reversal of 122222222222212 is 212222222222221.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a nude number because it is divisible by every one of its digits.

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, 918124308 + ... + 918257419.

Almost surely, 2^{122222222222212} is an apocalyptic number.

It is an amenable number.

122222222222212 is an abundant number, since it is smaller than the sum of its proper divisors (122325059732092).

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

122222222222212 is a wasteful number, since it uses less digits than its factorization.

122222222222212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1836384115 (or 1836384113 counting only the distinct ones).

The product of its digits is 8192, while the sum is 28.

Adding to 122222222222212 its reverse (212222222222221), we get a palindrome (334444444444433).

Subtracting 122222222222212 from its reverse (212222222222221), we obtain a palindrome (90000000000009).

It can be divided in two parts, 12222222222221 and 2, that multiplied together give a palindrome (24444444444442).

The spelling of 122222222222212 in words is "one hundred twenty-two trillion, two hundred twenty-two billion, two hundred twenty-two million, two hundred twenty-two thousand, two hundred twelve".