221111112021022 has 16 divisors (see below), whose sum is σ = 337289089230000. Its totient is φ = 108681426191680.

The previous prime is 221111112020951. The next prime is 221111112021083. The reversal of 221111112021022 is 220120211111122.

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 7 ways as a sum of consecutive naturals, for example, 42592122 + ... + 47500642.

It is an arithmetic number, because the mean of its divisors is an integer number (21080568076875).

Almost surely, 2^{221111112021022} is an apocalyptic number.

221111112021022 is a deficient number, since it is larger than the sum of its proper divisors (116177977208978).

221111112021022 is a wasteful number, since it uses less digits than its factorization.

221111112021022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5290331.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 221111112021022 its reverse (220120211111122), we get a palindrome (441231323132144).

The spelling of 221111112021022 in words is "two hundred twenty-one trillion, one hundred eleven billion, one hundred twelve million, twenty-one thousand, twenty-two".