213033222 has 48 divisors (see below), whose sum is σ = 509988960. Its totient is φ = 63926016.

The previous prime is 213033181. The next prime is 213033241. The reversal of 213033222 is 222330312.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 213033195 and 213033204.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 8097 + ... + 22172.

It is an arithmetic number, because the mean of its divisors is an integer number (10624770).

Almost surely, 2^213033222 is an apocalyptic number.

213033222 is an abundant number, since it is smaller than the sum of its proper divisors (296955738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213033222 is a wasteful number, since it uses less digits than its factorization.

213033222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30317 (or 30314 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 213033222 is about 14595.6576419153. The cubic root of 213033222 is about 597.2403096425.

Adding to 213033222 its reverse (222330312), we get a palindrome (435363534).

The spelling of 213033222 in words is "two hundred thirteen million, thirty-three thousand, two hundred twenty-two".