21110112021293 has 2 divisors, whose sum is σ = 21110112021294. Its totient is φ = 21110112021292.

The previous prime is 21110112021133. The next prime is 21110112021329. The reversal of 21110112021293 is 39212021101112.

Together with next prime (21110112021329) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15947387322724 + 5162724698569 = 3993418^2 + 2272163^2 .

It is a cyclic number.

It is not a de Polignac number, because 21110112021293 - 2²² = 21110107826989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21110112020293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10555056010646 + 10555056010647.

It is an arithmetic number, because the mean of its divisors is an integer number (10555056010647).

Almost surely, 2^{21110112021293} is an apocalyptic number.

It is an amenable number.

21110112021293 is a deficient number, since it is larger than the sum of its proper divisors (1).

21110112021293 is an equidigital number, since it uses as much as digits as its factorization.

21110112021293 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 26.

The spelling of 21110112021293 in words is "twenty-one trillion, one hundred ten billion, one hundred twelve million, twenty-one thousand, two hundred ninety-three".