12220040212 has 12 divisors (see below), whose sum is σ = 21605535700. Its totient is φ = 6047030016.

The previous prime is 12220040191. The next prime is 12220040221. The reversal of 12220040212 is 21204002221.

It can be written as a sum of positive squares in 2 ways, for example, as 7699360516 + 4520679696 = 87746^2 + 67236^2 .

It is a congruent number.

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, 15747087 + ... + 15747862.

Almost surely, 2^12220040212 is an apocalyptic number.

It is an amenable number.

12220040212 is a deficient number, since it is larger than the sum of its proper divisors (9385495488).

12220040212 is a wasteful number, since it uses less digits than its factorization.

12220040212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31495050 (or 31495048 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 12220040212 its reverse (21204002221), we get a palindrome (33424042433).

The spelling of 12220040212 in words is "twelve billion, two hundred twenty million, forty thousand, two hundred twelve".