22212220220 has 24 divisors (see below), whose sum is σ = 46735215408. Its totient is φ = 8867830400.

The previous prime is 22212220187. The next prime is 22212220243. The reversal of 22212220220 is 2202221222.

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, 1055426 + ... + 1076265.

It is an arithmetic number, because the mean of its divisors is an integer number (1947300642).

Almost surely, 2^22212220220 is an apocalyptic number.

22212220220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22212220220 is an abundant number, since it is smaller than the sum of its proper divisors (24522995188).

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

22212220220 is a wasteful number, since it uses less digits than its factorization.

22212220220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2132221 (or 2132219 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 22212220220 its reverse (2202221222), we get a palindrome (24414441442).

The spelling of 22212220220 in words is "twenty-two billion, two hundred twelve million, two hundred twenty thousand, two hundred twenty".