222872644387 has 4 divisors (see below), whose sum is σ = 222874904560. Its totient is φ = 222870384216.

The previous prime is 222872644369. The next prime is 222872644391. The reversal of 222872644387 is 783446278222.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 783446278222 = 2 ⋅391723139111.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222872644387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222872644307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 975087 + ... + 1181752.

It is an arithmetic number, because the mean of its divisors is an integer number (55718726140).

Almost surely, 2^222872644387 is an apocalyptic number.

222872644387 is a deficient number, since it is larger than the sum of its proper divisors (2260173).

222872644387 is a wasteful number, since it uses less digits than its factorization.

222872644387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2260172.

The product of its digits is 14450688, while the sum is 55.

The spelling of 222872644387 in words is "two hundred twenty-two billion, eight hundred seventy-two million, six hundred forty-four thousand, three hundred eighty-seven".