202222218 has 24 divisors (see below), whose sum is σ = 444556224. Its totient is φ = 61279240.

The previous prime is 202222217. The next prime is 202222243. The reversal of 202222218 is 812222202.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 202222194 and 202222203.

It is not an unprimeable number, because it can be changed into a prime (202222213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 138546 + ... + 139997.

It is an arithmetic number, because the mean of its divisors is an integer number (18523176).

Almost surely, 2^202222218 is an apocalyptic number.

202222218 is an abundant number, since it is smaller than the sum of its proper divisors (242334006).

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

202222218 is a wasteful number, since it uses less digits than its factorization.

202222218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278570 (or 278559 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 202222218 is about 14220.4858566787. The cubic root of 202222218 is about 586.9615097810.

The spelling of 202222218 in words is "two hundred two million, two hundred twenty-two thousand, two hundred eighteen".