222321213021 has 16 divisors (see below), whose sum is σ = 322348089024. Its totient is φ = 135725508864.

The previous prime is 222321213011. The next prime is 222321213047. The reversal of 222321213021 is 120312123222.

It is not a de Polignac number, because 222321213021 - 2¹⁴ = 222321196637 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222321213001) 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, 58906755 + ... + 58910528.

It is an arithmetic number, because the mean of its divisors is an integer number (20146755564).

Almost surely, 2^222321213021 is an apocalyptic number.

It is an amenable number.

222321213021 is a deficient number, since it is larger than the sum of its proper divisors (100026876003).

222321213021 is a wasteful number, since it uses less digits than its factorization.

222321213021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117817340.

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

Adding to 222321213021 its reverse (120312123222), we get a palindrome (342633336243).

The spelling of 222321213021 in words is "two hundred twenty-two billion, three hundred twenty-one million, two hundred thirteen thousand, twenty-one".