221021200211022 has 32 divisors (see below), whose sum is σ = 492475000812960. Its totient is φ = 73476216685440.

The previous prime is 221021200211011. The next prime is 221021200211047. The reversal of 221021200211022 is 220112002120122.

It is a happy number.

221021200211022 is a `hidden beast` number, since 2 + 210 + 21 + 200 + 211 + 0 + 22 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 221021200210986 and 221021200211004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5486555179 + ... + 5486595462.

It is an arithmetic number, because the mean of its divisors is an integer number (15389843775405).

Almost surely, 2^{221021200211022} is an apocalyptic number.

221021200211022 is an abundant number, since it is smaller than the sum of its proper divisors (271453800601938).

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

221021200211022 is a wasteful number, since it uses less digits than its factorization.

221021200211022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10973151025 (or 10973151019 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 221021200211022 its reverse (220112002120122), we get a palindrome (441133202331144).

The spelling of 221021200211022 in words is "two hundred twenty-one trillion, twenty-one billion, two hundred million, two hundred eleven thousand, twenty-two".