222345121612 has 12 divisors (see below), whose sum is σ = 389226076120. Its totient is φ = 111137671296.

The previous prime is 222345121591. The next prime is 222345121613. The reversal of 222345121612 is 216121543222.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (222345121613) 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, 8708037 + ... + 8733532.

Almost surely, 2^222345121612 is an apocalyptic number.

It is an amenable number.

222345121612 is a deficient number, since it is larger than the sum of its proper divisors (166880954508).

222345121612 is a wasteful number, since it uses less digits than its factorization.

222345121612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17444760 (or 17444758 counting only the distinct ones).

The product of its digits is 11520, while the sum is 31.

Adding to 222345121612 its reverse (216121543222), we get a palindrome (438466664834).

The spelling of 222345121612 in words is "two hundred twenty-two billion, three hundred forty-five million, one hundred twenty-one thousand, six hundred twelve".