222232113221 has 4 divisors (see below), whose sum is σ = 223360195212. Its totient is φ = 221104031232.

The previous prime is 222232113211. The next prime is 222232113241. The reversal of 222232113221 is 122311232222.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 150048544321 + 72183568900 = 387361^2 + 268670^2 .

It is a cyclic number.

It is not a de Polignac number, because 222232113221 - 2¹⁸ = 222231851077 is a prime.

It is a super-2 number, since 2×222232113221² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222232113211) 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, 564040700 + ... + 564041093.

It is an arithmetic number, because the mean of its divisors is an integer number (55840048803).

Almost surely, 2^222232113221 is an apocalyptic number.

It is an amenable number.

222232113221 is a deficient number, since it is larger than the sum of its proper divisors (1128081991).

222232113221 is a wasteful number, since it uses less digits than its factorization.

222232113221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1128081990.

The product of its digits is 1152, while the sum is 23.

Adding to 222232113221 its reverse (122311232222), we get a palindrome (344543345443).

The spelling of 222232113221 in words is "two hundred twenty-two billion, two hundred thirty-two million, one hundred thirteen thousand, two hundred twenty-one".