221000202112220 has 12 divisors (see below), whose sum is σ = 464100424435704. Its totient is φ = 88400080844880.

The previous prime is 221000202112181. The next prime is 221000202112267. The reversal of 221000202112220 is 22211202000122.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5525005052786 + ... + 5525005052825.

It is an arithmetic number, because the mean of its divisors is an integer number (38675035369642).

Almost surely, 2^{221000202112220} is an apocalyptic number.

221000202112220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221000202112220 is an abundant number, since it is smaller than the sum of its proper divisors (243100222323484).

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

221000202112220 is a wasteful number, since it uses less digits than its factorization.

221000202112220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11050010105620 (or 11050010105618 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 221000202112220 its reverse (22211202000122), we get a palindrome (243211404112342).

The spelling of 221000202112220 in words is "two hundred twenty-one trillion, two hundred two million, one hundred twelve thousand, two hundred twenty".