16721122339 has 2 divisors, whose sum is σ = 16721122340. Its totient is φ = 16721122338.

The previous prime is 16721122309. The next prime is 16721122351. The reversal of 16721122339 is 93322112761.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16721122339 - 2⁷ = 16721122211 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16721122298 and 16721122307.

It is not a weakly prime, because it can be changed into another prime (16721122309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8360561169 + 8360561170.

It is an arithmetic number, because the mean of its divisors is an integer number (8360561170).

Almost surely, 2^16721122339 is an apocalyptic number.

16721122339 is a deficient number, since it is larger than the sum of its proper divisors (1).

16721122339 is an equidigital number, since it uses as much as digits as its factorization.

16721122339 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 37.

The spelling of 16721122339 in words is "sixteen billion, seven hundred twenty-one million, one hundred twenty-two thousand, three hundred thirty-nine".