221002117079 has 2 divisors, whose sum is σ = 221002117080. Its totient is φ = 221002117078.

The previous prime is 221002117069. The next prime is 221002117103. The reversal of 221002117079 is 970711200122.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221002117079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221002117069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110501058539 + 110501058540.

It is an arithmetic number, because the mean of its divisors is an integer number (110501058540).

Almost surely, 2^221002117079 is an apocalyptic number.

221002117079 is a deficient number, since it is larger than the sum of its proper divisors (1).

221002117079 is an equidigital number, since it uses as much as digits as its factorization.

221002117079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3528, while the sum is 32.

The spelling of 221002117079 in words is "two hundred twenty-one billion, two million, one hundred seventeen thousand, seventy-nine".