12212122222212 has 24 divisors (see below), whose sum is σ = 31085402020512. Its totient is φ = 3700643097600.

The previous prime is 12212122222129. The next prime is 12212122222231. The reversal of 12212122222212 is 21222222121221.

It is a happy number.

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, 46258038589 + ... + 46258038852.

It is an arithmetic number, because the mean of its divisors is an integer number (1295225084188).

Almost surely, 2^{12212122222212} is an apocalyptic number.

12212122222212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12212122222212 is an abundant number, since it is smaller than the sum of its proper divisors (18873279798300).

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

12212122222212 is a wasteful number, since it uses less digits than its factorization.

12212122222212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92516077459 (or 92516077457 counting only the distinct ones).

The product of its digits is 1024, while the sum is 24.

Adding to 12212122222212 its reverse (21222222121221), we get a palindrome (33434344343433).

The spelling of 12212122222212 in words is "twelve trillion, two hundred twelve billion, one hundred twenty-two million, two hundred twenty-two thousand, two hundred twelve".