13220212312 has 32 divisors (see below), whose sum is σ = 26520289200. Its totient is φ = 6159542400.

The previous prime is 13220212309. The next prime is 13220212319. The reversal of 13220212312 is 21321202231.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 13220212312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13220212319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 703639 + ... + 722182.

Almost surely, 2^13220212312 is an apocalyptic number.

It is an amenable number.

13220212312 is an abundant number, since it is smaller than the sum of its proper divisors (13300076888).

13220212312 is a wasteful number, since it uses less digits than its factorization.

13220212312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1425907 (or 1425903 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 13220212312 its reverse (21321202231), we get a palindrome (34541414543).

The spelling of 13220212312 in words is "thirteen billion, two hundred twenty million, two hundred twelve thousand, three hundred twelve".