222122012021 has 16 divisors (see below), whose sum is σ = 273404371968. Its totient is φ = 175729824000.

The previous prime is 222122012017. The next prime is 222122012023. The reversal of 222122012021 is 120210221222.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 222122012021 - 2² = 222122012017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222122012023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1030076 + ... + 1226906.

It is an arithmetic number, because the mean of its divisors is an integer number (17087773248).

Almost surely, 2^222122012021 is an apocalyptic number.

It is an amenable number.

222122012021 is a deficient number, since it is larger than the sum of its proper divisors (51282359947).

222122012021 is a wasteful number, since it uses less digits than its factorization.

222122012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209252.

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

Adding to 222122012021 its reverse (120210221222), we get a palindrome (342332233243).

The spelling of 222122012021 in words is "two hundred twenty-two billion, one hundred twenty-two million, twelve thousand, twenty-one".