13220112977 has 2 divisors, whose sum is σ = 13220112978. Its totient is φ = 13220112976.

The previous prime is 13220112959. The next prime is 13220112991. The reversal of 13220112977 is 77921102231.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13014018241 + 206094736 = 114079^2 + 14356^2 .

It is a cyclic number.

It is not a de Polignac number, because 13220112977 - 2¹⁰ = 13220111953 is a prime.

It is not a weakly prime, because it can be changed into another prime (13220112077) 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 as a sum of consecutive naturals, namely, 6610056488 + 6610056489.

It is an arithmetic number, because the mean of its divisors is an integer number (6610056489).

Almost surely, 2^13220112977 is an apocalyptic number.

It is an amenable number.

13220112977 is a deficient number, since it is larger than the sum of its proper divisors (1).

13220112977 is an equidigital number, since it uses as much as digits as its factorization.

13220112977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10584, while the sum is 35.

The spelling of 13220112977 in words is "thirteen billion, two hundred twenty million, one hundred twelve thousand, nine hundred seventy-seven".