21002132200079 has 2 divisors, whose sum is σ = 21002132200080. Its totient is φ = 21002132200078.

The previous prime is 21002132199977. The next prime is 21002132200087. The reversal of 21002132200079 is 97000223120012.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21002132200079 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21002132200579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10501066100039 + 10501066100040.

It is an arithmetic number, because the mean of its divisors is an integer number (10501066100040).

Almost surely, 2^{21002132200079} is an apocalyptic number.

21002132200079 is a deficient number, since it is larger than the sum of its proper divisors (1).

21002132200079 is an equidigital number, since it uses as much as digits as its factorization.

21002132200079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 29.

The spelling of 21002132200079 in words is "twenty-one trillion, two billion, one hundred thirty-two million, two hundred thousand, seventy-nine".