221172713039 has 2 divisors, whose sum is σ = 221172713040. Its totient is φ = 221172713038.

The previous prime is 221172713017. The next prime is 221172713063. The reversal of 221172713039 is 930317271122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221172713039 - 2¹² = 221172708943 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 221172712993 and 221172713011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221172713939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110586356519 + 110586356520.

It is an arithmetic number, because the mean of its divisors is an integer number (110586356520).

Almost surely, 2^221172713039 is an apocalyptic number.

221172713039 is a deficient number, since it is larger than the sum of its proper divisors (1).

221172713039 is an equidigital number, since it uses as much as digits as its factorization.

221172713039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31752, while the sum is 38.

The spelling of 221172713039 in words is "two hundred twenty-one billion, one hundred seventy-two million, seven hundred thirteen thousand, thirty-nine".