22222012121220 has 24 divisors (see below), whose sum is σ = 62221633939584. Its totient is φ = 5925869898976.

The previous prime is 22222012121171. The next prime is 22222012121261. The reversal of 22222012121220 is 2212121022222.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185183434284 + ... + 185183434403.

It is an arithmetic number, because the mean of its divisors is an integer number (2592568080816).

Almost surely, 2^{22222012121220} is an apocalyptic number.

22222012121220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22222012121220 is an abundant number, since it is smaller than the sum of its proper divisors (39999621818364).

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

22222012121220 is a wasteful number, since it uses less digits than its factorization.

22222012121220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370366868699 (or 370366868697 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 22222012121220 its reverse (2212121022222), we get a palindrome (24434133143442).

The spelling of 22222012121220 in words is "twenty-two trillion, two hundred twenty-two billion, twelve million, one hundred twenty-one thousand, two hundred twenty".