222210202221 has 24 divisors (see below), whose sum is σ = 374627944704. Its totient is φ = 124275612960.

The previous prime is 222210202213. The next prime is 222210202259. The reversal of 222210202221 is 122202012222.

222210202221 is a `hidden beast` number, since 22 + 221 + 0 + 202 + 221 = 666.

It is not a de Polignac number, because 222210202221 - 2³ = 222210202213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222210202194 and 222210202203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222210202421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37519870 + ... + 37525791.

It is an arithmetic number, because the mean of its divisors is an integer number (15609497696).

Almost surely, 2^222210202221 is an apocalyptic number.

222210202221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

222210202221 is a deficient number, since it is larger than the sum of its proper divisors (152417742483).

222210202221 is a wasteful number, since it uses less digits than its factorization.

222210202221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75045721 (or 75045718 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 222210202221 its reverse (122202012222), we get a palindrome (344412214443).

The spelling of 222210202221 in words is "two hundred twenty-two billion, two hundred ten million, two hundred two thousand, two hundred twenty-one".