221311223022 has 72 divisors (see below), whose sum is σ = 464831479224. Its totient is φ = 70243691328.

The previous prime is 221311223017. The next prime is 221311223099. The reversal of 221311223022 is 220322113122.

It is a self number, because there is not a number n which added to its sum of digits gives 221311223022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 18138628 + ... + 18150824.

It is an arithmetic number, because the mean of its divisors is an integer number (6455992767).

Almost surely, 2^221311223022 is an apocalyptic number.

221311223022 is an abundant number, since it is smaller than the sum of its proper divisors (243520256202).

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

221311223022 is a wasteful number, since it uses less digits than its factorization.

221311223022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12370 (or 12286 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 221311223022 its reverse (220322113122), we get a palindrome (441633336144).

The spelling of 221311223022 in words is "two hundred twenty-one billion, three hundred eleven million, two hundred twenty-three thousand, twenty-two".