22222121122220 has 24 divisors (see below), whose sum is σ = 47002184250000. Its totient is φ = 8824899897792.

The previous prime is 22222121122211. The next prime is 22222121122231. The reversal of 22222121122220 is 2222112122222.

It is a super-4 number, since 4×22222121122220⁴ (a number of 54 digits) contains 4444 as substring.

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, 3996781595 + ... + 3996787154.

It is an arithmetic number, because the mean of its divisors is an integer number (1958424343750).

Almost surely, 2^{22222121122220} is an apocalyptic number.

22222121122220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22222121122220 is an abundant number, since it is smaller than the sum of its proper divisors (24780063127780).

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

22222121122220 is a wasteful number, since it uses less digits than its factorization.

22222121122220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7993568897 (or 7993568895 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 22222121122220 its reverse (2222112122222), we get a palindrome (24444233244442).

The spelling of 22222121122220 in words is "twenty-two trillion, two hundred twenty-two billion, one hundred twenty-one million, one hundred twenty-two thousand, two hundred twenty".