21112001012093 has 2 divisors, whose sum is σ = 21112001012094. Its totient is φ = 21112001012092.

The previous prime is 21112001012021. The next prime is 21112001012147. The reversal of 21112001012093 is 39021010021112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20578906814404 + 533094197689 = 4536398^2 + 730133^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21112001012093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21112001011093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10556000506046 + 10556000506047.

It is an arithmetic number, because the mean of its divisors is an integer number (10556000506047).

Almost surely, 2^{21112001012093} is an apocalyptic number.

It is an amenable number.

21112001012093 is a deficient number, since it is larger than the sum of its proper divisors (1).

21112001012093 is an equidigital number, since it uses as much as digits as its factorization.

21112001012093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 23.

The spelling of 21112001012093 in words is "twenty-one trillion, one hundred twelve billion, one million, twelve thousand, ninety-three".