221002110079 has 2 divisors, whose sum is σ = 221002110080. Its totient is φ = 221002110078.

The previous prime is 221002110061. The next prime is 221002110113. The reversal of 221002110079 is 970011200122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221002110079 - 2⁹ = 221002109567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221002117079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110501055039 + 110501055040.

It is an arithmetic number, because the mean of its divisors is an integer number (110501055040).

Almost surely, 2^221002110079 is an apocalyptic number.

221002110079 is a deficient number, since it is larger than the sum of its proper divisors (1).

221002110079 is an equidigital number, since it uses as much as digits as its factorization.

221002110079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 25.

It can be divided in two parts, 2210021 and 10079, that added together give a square (2220100 = 1490²).

The spelling of 221002110079 in words is "two hundred twenty-one billion, two million, one hundred ten thousand, seventy-nine".