12220122212 has 12 divisors (see below), whose sum is σ = 21453539436. Its totient is φ = 6090539520.

The previous prime is 12220122197. The next prime is 12220122259. The reversal of 12220122212 is 21222102221.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3464028736 + 8756093476 = 58856^2 + 93574^2 .

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, 4878989 + ... + 4881492.

It is an arithmetic number, because the mean of its divisors is an integer number (1787794953).

Almost surely, 2^12220122212 is an apocalyptic number.

It is an amenable number.

12220122212 is a deficient number, since it is larger than the sum of its proper divisors (9233417224).

12220122212 is a wasteful number, since it uses less digits than its factorization.

12220122212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9760798 (or 9760796 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 12220122212 its reverse (21222102221), we get a palindrome (33442224433).

The spelling of 12220122212 in words is "twelve billion, two hundred twenty million, one hundred twenty-two thousand, two hundred twelve".