201223320979 has 2 divisors, whose sum is σ = 201223320980. Its totient is φ = 201223320978.

The previous prime is 201223320941. The next prime is 201223321021. The reversal of 201223320979 is 979023322102.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201223320979 is a prime.

It is not a weakly prime, because it can be changed into another prime (201223320479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100611660489 + 100611660490.

It is an arithmetic number, because the mean of its divisors is an integer number (100611660490).

Almost surely, 2^201223320979 is an apocalyptic number.

201223320979 is a deficient number, since it is larger than the sum of its proper divisors (1).

201223320979 is an equidigital number, since it uses as much as digits as its factorization.

201223320979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 40.

The spelling of 201223320979 in words is "two hundred one billion, two hundred twenty-three million, three hundred twenty thousand, nine hundred seventy-nine".