122221222212 has 24 divisors (see below), whose sum is σ = 292890497536. Its totient is φ = 39639315168.

The previous prime is 122221222183. The next prime is 122221222219. The reversal of 122221222212 is 212222122221.

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

It is not an unprimeable number, because it can be changed into a prime (122221222219) 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, 137636068 + ... + 137636955.

Almost surely, 2^122221222212 is an apocalyptic number.

122221222212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

122221222212 is an abundant number, since it is smaller than the sum of its proper divisors (170669275324).

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

122221222212 is a wasteful number, since it uses less digits than its factorization.

122221222212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275273067 (or 275273065 counting only the distinct ones).

The product of its digits is 512, while the sum is 21.

Adding to 122221222212 its reverse (212222122221), we get a palindrome (334443344433).

Subtracting 122221222212 from its reverse (212222122221), we obtain a palindrome (90000900009).

It can be divided in two parts, 12222122221 and 2, that multiplied together give a palindrome (24444244442).

The spelling of 122221222212 in words is "one hundred twenty-two billion, two hundred twenty-one million, two hundred twenty-two thousand, two hundred twelve".