222221021000 has 64 divisors (see below), whose sum is σ = 567269688960. Its totient is φ = 80807640000.

The previous prime is 222221020991. The next prime is 222221021051. The reversal of 222221021000 is 120122222.

222221021000 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10089956 + ... + 10111955.

It is an arithmetic number, because the mean of its divisors is an integer number (8863588890).

Almost surely, 2^222221021000 is an apocalyptic number.

222221021000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222221021000 is an abundant number, since it is smaller than the sum of its proper divisors (345048667960).

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

222221021000 is a wasteful number, since it uses less digits than its factorization.

222221021000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20201943 (or 20201929 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 222221021000 its reverse (120122222), we get a palindrome (222341143222).

The spelling of 222221021000 in words is "two hundred twenty-two billion, two hundred twenty-one million, twenty-one thousand".