2100021232079 has 2 divisors, whose sum is σ = 2100021232080. Its totient is φ = 2100021232078.

The previous prime is 2100021232021. The next prime is 2100021232097. The reversal of 2100021232079 is 9702321200012.

Together with next prime (2100021232097) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2100021232079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2100021532079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050010616039 + 1050010616040.

It is an arithmetic number, because the mean of its divisors is an integer number (1050010616040).

Almost surely, 2^{2100021232079} is an apocalyptic number.

2100021232079 is a deficient number, since it is larger than the sum of its proper divisors (1).

2100021232079 is an equidigital number, since it uses as much as digits as its factorization.

2100021232079 is an evil number, because the sum of its binary digits is even.

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

The spelling of 2100021232079 in words is "two trillion, one hundred billion, twenty-one million, two hundred thirty-two thousand, seventy-nine".