21112101010079 has 2 divisors, whose sum is σ = 21112101010080. Its totient is φ = 21112101010078.

The previous prime is 21112101010057. The next prime is 21112101010123. The reversal of 21112101010079 is 97001010121112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21112101010079 - 2⁴⁴ = 3519914965663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21112101010279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10556050505039 + 10556050505040.

It is an arithmetic number, because the mean of its divisors is an integer number (10556050505040).

Almost surely, 2^{21112101010079} is an apocalyptic number.

21112101010079 is a deficient number, since it is larger than the sum of its proper divisors (1).

21112101010079 is an equidigital number, since it uses as much as digits as its factorization.

21112101010079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 26.

The spelling of 21112101010079 in words is "twenty-one trillion, one hundred twelve billion, one hundred one million, ten thousand, seventy-nine".