21302011232893 has 2 divisors, whose sum is σ = 21302011232894. Its totient is φ = 21302011232892.

The previous prime is 21302011232807. The next prime is 21302011232941. The reversal of 21302011232893 is 39823211020312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19613188827684 + 1688822405209 = 4428678^2 + 1299547^2 .

It is a cyclic number.

It is not a de Polignac number, because 21302011232893 - 2²¹ = 21302009135741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21302011232693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10651005616446 + 10651005616447.

It is an arithmetic number, because the mean of its divisors is an integer number (10651005616447).

Almost surely, 2^{21302011232893} is an apocalyptic number.

It is an amenable number.

21302011232893 is a deficient number, since it is larger than the sum of its proper divisors (1).

21302011232893 is an equidigital number, since it uses as much as digits as its factorization.

21302011232893 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 37.

The spelling of 21302011232893 in words is "twenty-one trillion, three hundred two billion, eleven million, two hundred thirty-two thousand, eight hundred ninety-three".