222951213 has 12 divisors (see below), whose sum is σ = 336042720. Its totient is φ = 142171656.

The previous prime is 222951203. The next prime is 222951241. The reversal of 222951213 is 312159222.

It is a happy number.

It is not a de Polignac number, because 222951213 - 2⁸ = 222950957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222951203) 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 11 ways as a sum of consecutive naturals, for example, 538323 + ... + 538736.

It is an arithmetic number, because the mean of its divisors is an integer number (28003560).

Almost surely, 2^222951213 is an apocalyptic number.

222951213 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

222951213 is a deficient number, since it is larger than the sum of its proper divisors (113091507).

222951213 is a wasteful number, since it uses less digits than its factorization.

222951213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1077088 (or 1077085 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 222951213 is about 14931.5509241338. The cubic root of 222951213 is about 606.3684734206.

It can be divided in two parts, 22 and 2951213, that added together give a triangular number (2951235 = T₂₄₂₉).

The spelling of 222951213 in words is "two hundred twenty-two million, nine hundred fifty-one thousand, two hundred thirteen".