222102010221 has 64 divisors (see below), whose sum is σ = 380463315456. Its totient is φ = 112117478400.

The previous prime is 222102010213. The next prime is 222102010237. The reversal of 222102010221 is 122010201222.

It is not a de Polignac number, because 222102010221 - 2³ = 222102010213 is a prime.

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 222102010221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222102010201) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 435931 + ... + 796391.

It is an arithmetic number, because the mean of its divisors is an integer number (5944739304).

Almost surely, 2^222102010221 is an apocalyptic number.

222102010221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

222102010221 is a deficient number, since it is larger than the sum of its proper divisors (158361305235).

222102010221 is a wasteful number, since it uses less digits than its factorization.

222102010221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360582.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 222102010221 its reverse (122010201222), we get a palindrome (344112211443).

The spelling of 222102010221 in words is "two hundred twenty-two billion, one hundred two million, ten thousand, two hundred twenty-one".