12212222202 has 32 divisors (see below), whose sum is σ = 27191649600. Its totient is φ = 4062734064.

The previous prime is 12212222177. The next prime is 12212222237. The reversal of 12212222202 is 20222221221.

12212222202 is a `hidden beast` number, since 1 + 221 + 222 + 220 + 2 = 666.

It is a super-2 number, since 2×12212222202² (a number of 21 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 194668 + ... + 249639.

It is an arithmetic number, because the mean of its divisors is an integer number (849739050).

Almost surely, 2^12212222202 is an apocalyptic number.

12212222202 is an abundant number, since it is smaller than the sum of its proper divisors (14979427398).

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

12212222202 is a wasteful number, since it uses less digits than its factorization.

12212222202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444827 (or 444821 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 12212222202 its reverse (20222221221), we get a palindrome (32434443423).

The spelling of 12212222202 in words is "twelve billion, two hundred twelve million, two hundred twenty-two thousand, two hundred two".