122222211212 has 24 divisors (see below), whose sum is σ = 228805328304. Its totient is φ = 56923379712.

The previous prime is 122222211143. The next prime is 122222211233. The reversal of 122222211212 is 212112222221.

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, 9258278 + ... + 9271469.

It is an arithmetic number, because the mean of its divisors is an integer number (9533555346).

Almost surely, 2^122222211212 is an apocalyptic number.

It is an amenable number.

122222211212 is a deficient number, since it is larger than the sum of its proper divisors (106583117092).

122222211212 is a wasteful number, since it uses less digits than its factorization.

122222211212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18529865 (or 18529863 counting only the distinct ones).

The product of its digits is 256, while the sum is 20.

Adding to 122222211212 its reverse (212112222221), we get a palindrome (334334433433).

The spelling of 122222211212 in words is "one hundred twenty-two billion, two hundred twenty-two million, two hundred eleven thousand, two hundred twelve".