222631664421 has 16 divisors (see below), whose sum is σ = 301290848768. Its totient is φ = 146197062000.

The previous prime is 222631664401. The next prime is 222631664461. The reversal of 222631664421 is 124466136222.

It is a happy number.

It is not a de Polignac number, because 222631664421 - 2⁵ = 222631664389 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 222631664421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222631664401) 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, 6223416 + ... + 6259086.

It is an arithmetic number, because the mean of its divisors is an integer number (18830678048).

Almost surely, 2^222631664421 is an apocalyptic number.

It is an amenable number.

222631664421 is a deficient number, since it is larger than the sum of its proper divisors (78659184347).

222631664421 is a wasteful number, since it uses less digits than its factorization.

222631664421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66792.

The product of its digits is 165888, while the sum is 39.

The spelling of 222631664421 in words is "two hundred twenty-two billion, six hundred thirty-one million, six hundred sixty-four thousand, four hundred twenty-one".