22222020221212 has 24 divisors (see below), whose sum is σ = 44445697279200. Its totient is φ = 9523367915520.

The previous prime is 22222020221209. The next prime is 22222020221231. The reversal of 22222020221212 is 21212202022222.

It is a congruent number.

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, 14027989 + ... + 15531532.

It is an arithmetic number, because the mean of its divisors is an integer number (1851904053300).

Almost surely, 2^{22222020221212} is an apocalyptic number.

It is an amenable number.

22222020221212 is an abundant number, since it is smaller than the sum of its proper divisors (22223677057988).

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

22222020221212 is a wasteful number, since it uses less digits than its factorization.

22222020221212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29586381 (or 29586379 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 22222020221212 its reverse (21212202022222), we get a palindrome (43434222243434).

The spelling of 22222020221212 in words is "twenty-two trillion, two hundred twenty-two billion, twenty million, two hundred twenty-one thousand, two hundred twelve".