93110021 has 2 divisors, whose sum is σ = 93110022. Its totient is φ = 93110020.

The previous prime is 93110011. The next prime is 93110023. The reversal of 93110021 is 12001139.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72760900 + 20349121 = 8530^2 + 4511^2 .

It is an emirp because it is prime and its reverse (12001139) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 93110021 - 2¹⁸ = 92847877 is a prime.

Together with 93110023, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (93110023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 46555010 + 46555011.

It is an arithmetic number, because the mean of its divisors is an integer number (46555011).

Almost surely, 2^93110021 is an apocalyptic number.

It is an amenable number.

93110021 is a deficient number, since it is larger than the sum of its proper divisors (1).

93110021 is an equidigital number, since it uses as much as digits as its factorization.

93110021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 93110021 is about 9649.3533980262. The cubic root of 93110021 is about 453.2440812734.

The spelling of 93110021 in words is "ninety-three million, one hundred ten thousand, twenty-one".