13220129971 has 2 divisors, whose sum is σ = 13220129972. Its totient is φ = 13220129970.

The previous prime is 13220129959. The next prime is 13220130029. The reversal of 13220129971 is 17992102231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13220129971 - 2⁵ = 13220129939 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13220129971.

It is not a weakly prime, because it can be changed into another prime (13220129171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6610064985 + 6610064986.

It is an arithmetic number, because the mean of its divisors is an integer number (6610064986).

Almost surely, 2^13220129971 is an apocalyptic number.

13220129971 is a deficient number, since it is larger than the sum of its proper divisors (1).

13220129971 is an equidigital number, since it uses as much as digits as its factorization.

13220129971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 37.

The spelling of 13220129971 in words is "thirteen billion, two hundred twenty million, one hundred twenty-nine thousand, nine hundred seventy-one".