22212212112212 has 24 divisors (see below), whose sum is σ = 38913376005504. Its totient is φ = 11094110157312.

The previous prime is 22212212112203. The next prime is 22212212112217. The reversal of 22212212112212 is 21221121221222.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22212212112217) 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, 15597428 + ... + 16961844.

It is an arithmetic number, because the mean of its divisors is an integer number (1621390666896).

Almost surely, 2^{22212212112212} is an apocalyptic number.

It is an amenable number.

22212212112212 is a deficient number, since it is larger than the sum of its proper divisors (16701163893292).

22212212112212 is a wasteful number, since it uses less digits than its factorization.

22212212112212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1368815 (or 1368813 counting only the distinct ones).

The product of its digits is 512, while the sum is 23.

Adding to 22212212112212 its reverse (21221121221222), we get a palindrome (43433333333434).

The spelling of 22212212112212 in words is "twenty-two trillion, two hundred twelve billion, two hundred twelve million, one hundred twelve thousand, two hundred twelve".