13112220409 has 2 divisors, whose sum is σ = 13112220410. Its totient is φ = 13112220408.

The previous prime is 13112220403. The next prime is 13112220439. The reversal of 13112220409 is 90402221131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11916997225 + 1195223184 = 109165^2 + 34572^2 .

It is a cyclic number.

It is not a de Polignac number, because 13112220409 - 2⁷ = 13112220281 is a prime.

It is a super-2 number, since 2×13112220409² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13112220403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6556110204 + 6556110205.

It is an arithmetic number, because the mean of its divisors is an integer number (6556110205).

Almost surely, 2^13112220409 is an apocalyptic number.

It is an amenable number.

13112220409 is a deficient number, since it is larger than the sum of its proper divisors (1).

13112220409 is an equidigital number, since it uses as much as digits as its factorization.

13112220409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

The spelling of 13112220409 in words is "thirteen billion, one hundred twelve million, two hundred twenty thousand, four hundred nine".