221303111110979 has 2 divisors, whose sum is σ = 221303111110980. Its totient is φ = 221303111110978.

The previous prime is 221303111110931. The next prime is 221303111111099. The reversal of 221303111110979 is 979011111303122.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221303111110979 is a prime.

It is not a weakly prime, because it can be changed into another prime (221303111110919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110651555555489 + 110651555555490.

It is an arithmetic number, because the mean of its divisors is an integer number (110651555555490).

Almost surely, 2^{221303111110979} is an apocalyptic number.

221303111110979 is a deficient number, since it is larger than the sum of its proper divisors (1).

221303111110979 is an equidigital number, since it uses as much as digits as its factorization.

221303111110979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20412, while the sum is 41.

The spelling of 221303111110979 in words is "two hundred twenty-one trillion, three hundred three billion, one hundred eleven million, one hundred ten thousand, nine hundred seventy-nine".