222813 has 12 divisors (see below), whose sum is σ = 339040. Its totient is φ = 140616.

The previous prime is 222799. The next prime is 222823. The reversal of 222813 is 318222.

It is a happy number.

It is not a de Polignac number, because 222813 - 2⁸ = 222557 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 (222823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 481 + ... + 822.

2²²²⁸¹³ is an apocalyptic number.

It is an amenable number.

222813 is a deficient number, since it is larger than the sum of its proper divisors (116227).

222813 is a wasteful number, since it uses less digits than its factorization.

222813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1328 (or 1325 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 222813 is about 472.0307193393. The cubic root of 222813 is about 60.6243146555.

It can be divided in two parts, 222 and 813, that added together give a triangular number (1035 = T₄₅).

The spelling of 222813 in words is "two hundred twenty-two thousand, eight hundred thirteen".