13220120279 has 2 divisors, whose sum is σ = 13220120280. Its totient is φ = 13220120278.

The previous prime is 13220120233. The next prime is 13220120317. The reversal of 13220120279 is 97202102231.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13220120279 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13220128279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6610060139 + 6610060140.

It is an arithmetic number, because the mean of its divisors is an integer number (6610060140).

Almost surely, 2^13220120279 is an apocalyptic number.

13220120279 is a deficient number, since it is larger than the sum of its proper divisors (1).

13220120279 is an equidigital number, since it uses as much as digits as its factorization.

13220120279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 29.

The spelling of 13220120279 in words is "thirteen billion, two hundred twenty million, one hundred twenty thousand, two hundred seventy-nine".