12122210112212 has 6 divisors (see below), whose sum is σ = 21213867696378. Its totient is φ = 6061105056104.

The previous prime is 12122210112161. The next prime is 12122210112227. The reversal of 12122210112212 is 21221101222121.

It can be written as a sum of positive squares in only one way, i.e., 10664887929796 + 1457322182416 = 3265714^2 + 1207196^2 .

It is a super-2 number, since 2×12122210112212² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1515276264023 + ... + 1515276264030.

It is an arithmetic number, because the mean of its divisors is an integer number (3535644616063).

Almost surely, 2^{12122210112212} is an apocalyptic number.

It is an amenable number.

12122210112212 is a deficient number, since it is larger than the sum of its proper divisors (9091657584166).

12122210112212 is a wasteful number, since it uses less digits than its factorization.

12122210112212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3030552528057 (or 3030552528055 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 12122210112212 its reverse (21221101222121), we get a palindrome (33343311334333).

The spelling of 12122210112212 in words is "twelve trillion, one hundred twenty-two billion, two hundred ten million, one hundred twelve thousand, two hundred twelve".