122122212012 has 72 divisors (see below), whose sum is σ = 311969876400. Its totient is φ = 40276483200.

The previous prime is 122122211899. The next prime is 122122212029. The reversal of 122122212012 is 210212221221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5621323 + ... + 5643005.

It is an arithmetic number, because the mean of its divisors is an integer number (4332914950).

Almost surely, 2^122122212012 is an apocalyptic number.

122122212012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

122122212012 is an abundant number, since it is smaller than the sum of its proper divisors (189847664388).

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

122122212012 is a wasteful number, since it uses less digits than its factorization.

122122212012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23343 (or 23338 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 122122212012 its reverse (210212221221), we get a palindrome (332334433233).

The spelling of 122122212012 in words is "one hundred twenty-two billion, one hundred twenty-two million, two hundred twelve thousand, twelve".