222210112221 has 48 divisors (see below), whose sum is σ = 340908871680. Its totient is φ = 139189881600.

The previous prime is 222210112211. The next prime is 222210112283. The reversal of 222210112221 is 122211012222.

It is a happy number.

222210112221 is a `hidden beast` number, since 222 + 210 + 1 + 12 + 221 = 666.

It is not a de Polignac number, because 222210112221 - 2¹³ = 222210104029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222210112194 and 222210112203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222210112211) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2613345 + ... + 2697033.

It is an arithmetic number, because the mean of its divisors is an integer number (7102268160).

Almost surely, 2^222210112221 is an apocalyptic number.

It is an amenable number.

222210112221 is a deficient number, since it is larger than the sum of its proper divisors (118698759459).

222210112221 is a wasteful number, since it uses less digits than its factorization.

222210112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83946 (or 83943 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 222210112221 its reverse (122211012222), we get a palindrome (344421124443).

Subtracting from 222210112221 its reverse (122211012222), we obtain a palindrome (99999099999).

It can be divided in two parts, 2222101 and 12221, that added together give a palindrome (2234322).

The spelling of 222210112221 in words is "two hundred twenty-two billion, two hundred ten million, one hundred twelve thousand, two hundred twenty-one".