12220012022312 has 16 divisors (see below), whose sum is σ = 22912671700500. Its totient is φ = 6109966235520.

The previous prime is 12220012022311. The next prime is 12220012022333. The reversal of 12220012022312 is 21322021002221.

It can be written as a sum of positive squares in 2 ways, for example, as 12218702016676 + 1310005636 = 3495526^2 + 36194^2 .

It is not an unprimeable number, because it can be changed into a prime (12220012022311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3645437 + ... + 6142412.

Almost surely, 2^{12220012022312} is an apocalyptic number.

It is an amenable number.

12220012022312 is a deficient number, since it is larger than the sum of its proper divisors (10692659678188).

12220012022312 is a wasteful number, since it uses less digits than its factorization.

12220012022312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9943916 (or 9943912 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 12220012022312 its reverse (21322021002221), we get a palindrome (33542033024533).

The spelling of 12220012022312 in words is "twelve trillion, two hundred twenty billion, twelve million, twenty-two thousand, three hundred twelve".