22012221232212 has 96 divisors (see below), whose sum is σ = 53606872510464. Its totient is φ = 7022054937600.

The previous prime is 22012221232193. The next prime is 22012221232223. The reversal of 22012221232212 is 21223212221022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46348183 + ... + 46820705.

It is an arithmetic number, because the mean of its divisors is an integer number (558404921984).

Almost surely, 2^{22012221232212} is an apocalyptic number.

It is an amenable number.

22012221232212 is an abundant number, since it is smaller than the sum of its proper divisors (31594651278252).

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

22012221232212 is a wasteful number, since it uses less digits than its factorization.

22012221232212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473949 (or 473947 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 22012221232212 its reverse (21223212221022), we get a palindrome (43235433453234).

The spelling of 22012221232212 in words is "twenty-two trillion, twelve billion, two hundred twenty-one million, two hundred thirty-two thousand, two hundred twelve".