12220316613 has 8 divisors (see below), whose sum is σ = 18104172800. Its totient is φ = 8146877724.

The previous prime is 12220316611. The next prime is 12220316629. The reversal of 12220316613 is 31661302221.

12220316613 is a `hidden beast` number, since 1 + 22 + 20 + 3 + 1 + 6 + 613 = 666.

It is not a de Polignac number, because 12220316613 - 2¹ = 12220316611 is a prime.

It is a super-2 number, since 2×12220316613² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 452604319 = 12220316613 / (1 + 2 + 2 + 2 + 0 + 3 + 1 + 6 + 6 + 1 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220316611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 226302133 + ... + 226302186.

It is an arithmetic number, because the mean of its divisors is an integer number (2263021600).

Almost surely, 2^12220316613 is an apocalyptic number.

It is an amenable number.

12220316613 is a deficient number, since it is larger than the sum of its proper divisors (5883856187).

12220316613 is an equidigital number, since it uses as much as digits as its factorization.

12220316613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452604328 (or 452604322 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

Adding to 12220316613 its reverse (31661302221), we get a palindrome (43881618834).

The spelling of 12220316613 in words is "twelve billion, two hundred twenty million, three hundred sixteen thousand, six hundred thirteen".