22012121212212 has 24 divisors (see below), whose sum is σ = 51363112323712. Its totient is φ = 7337160000000.

The previous prime is 22012121212199. The next prime is 22012121212243. The reversal of 22012121212212 is 21221212121022.

It is a super-2 number, since 2×22012121212212² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26287789 + ... + 27112212.

Almost surely, 2^{22012121212212} is an apocalyptic number.

It is an amenable number.

22012121212212 is an abundant number, since it is smaller than the sum of its proper divisors (29350991111500).

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

22012121212212 is a wasteful number, since it uses less digits than its factorization.

22012121212212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53434359 (or 53434357 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 22012121212212 its reverse (21221212121022), we get a palindrome (43233333333234).

The spelling of 22012121212212 in words is "twenty-two trillion, twelve billion, one hundred twenty-one million, two hundred twelve thousand, two hundred twelve".