222997311 has 6 divisors (see below), whose sum is σ = 322107240. Its totient is φ = 148664868.

The previous prime is 222997289. The next prime is 222997331. The reversal of 222997311 is 113799222.

It is not a de Polignac number, because 222997311 - 2¹⁰ = 222996287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222997331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12388731 + ... + 12388748.

It is an arithmetic number, because the mean of its divisors is an integer number (53684540).

Almost surely, 2^222997311 is an apocalyptic number.

222997311 is a deficient number, since it is larger than the sum of its proper divisors (99109929).

222997311 is a wasteful number, since it uses less digits than its factorization.

222997311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24777485 (or 24777482 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 222997311 is about 14933.0944884173. The cubic root of 222997311 is about 606.4102620063.

The spelling of 222997311 in words is "two hundred twenty-two million, nine hundred ninety-seven thousand, three hundred eleven".