22181818202 has 8 divisors (see below), whose sum is σ = 33276551412. Its totient is φ = 11089634400.

The previous prime is 22181818181. The next prime is 22181818231. The reversal of 22181818202 is 20281818122.

It can be written as a sum of positive squares in 2 ways, for example, as 21930944281 + 250873921 = 148091^2 + 15839^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 615449 + ... + 650492.

Almost surely, 2^22181818202 is an apocalyptic number.

22181818202 is a deficient number, since it is larger than the sum of its proper divisors (11094733210).

22181818202 is a wasteful number, since it uses less digits than its factorization.

22181818202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1274704.

The product of its (nonzero) digits is 8192, while the sum is 35.

The spelling of 22181818202 in words is "twenty-two billion, one hundred eighty-one million, eight hundred eighteen thousand, two hundred two".