14221071961 has 2 divisors, whose sum is σ = 14221071962. Its totient is φ = 14221071960.

The previous prime is 14221071919. The next prime is 14221072001. The reversal of 14221071961 is 16917012241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12623870736 + 1597201225 = 112356^2 + 39965^2 .

It is a cyclic number.

It is not a de Polignac number, because 14221071961 - 2²⁵ = 14187517529 is a prime.

It is not a weakly prime, because it can be changed into another prime (14221071901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7110535980 + 7110535981.

It is an arithmetic number, because the mean of its divisors is an integer number (7110535981).

Almost surely, 2^14221071961 is an apocalyptic number.

It is an amenable number.

14221071961 is a deficient number, since it is larger than the sum of its proper divisors (1).

14221071961 is an equidigital number, since it uses as much as digits as its factorization.

14221071961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 34.

The spelling of 14221071961 in words is "fourteen billion, two hundred twenty-one million, seventy-one thousand, nine hundred sixty-one".