222221012020 has 48 divisors (see below), whose sum is σ = 534673964160. Its totient is φ = 75998127744.

The previous prime is 222221011843. The next prime is 222221012021. The reversal of 222221012020 is 20210122222.

It is a junction number, because it is equal to n+sod(n) for n = 222221011985 and 222221012003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222221012021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1943530 + ... + 2054689.

It is an arithmetic number, because the mean of its divisors is an integer number (11139040920).

Almost surely, 2^222221012020 is an apocalyptic number.

222221012020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222221012020 is an abundant number, since it is smaller than the sum of its proper divisors (312452952140).

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

222221012020 is a wasteful number, since it uses less digits than its factorization.

222221012020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3998632 (or 3998630 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 222221012020 its reverse (20210122222), we get a palindrome (242431134242).

The spelling of 222221012020 in words is "two hundred twenty-two billion, two hundred twenty-one million, twelve thousand, twenty".