222121231013 has 12 divisors (see below), whose sum is σ = 244164323340. Its totient is φ = 201916366080.

The previous prime is 222121230979. The next prime is 222121231063. The reversal of 222121231013 is 310132121222.

It can be written as a sum of positive squares in 2 ways, for example, as 112508588929 + 109612642084 = 335423^2 + 331078^2 .

It is not a de Polignac number, because 222121231013 - 2⁶ = 222121230949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222121231063) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2462453 + ... + 2551061.

It is an arithmetic number, because the mean of its divisors is an integer number (20347026945).

Almost surely, 2^222121231013 is an apocalyptic number.

It is an amenable number.

222121231013 is a deficient number, since it is larger than the sum of its proper divisors (22043092327).

222121231013 is a wasteful number, since it uses less digits than its factorization.

222121231013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109348 (or 109337 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 222121231013 its reverse (310132121222), we get a palindrome (532253352235).

The spelling of 222121231013 in words is "two hundred twenty-two billion, one hundred twenty-one million, two hundred thirty-one thousand, thirteen".