21233013130309 has 2 divisors, whose sum is σ = 21233013130310. Its totient is φ = 21233013130308.

The previous prime is 21233013130279. The next prime is 21233013130331. The reversal of 21233013130309 is 90303131033212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18880154716900 + 2352858413409 = 4345130^2 + 1533903^2 .

It is a cyclic number.

It is not a de Polignac number, because 21233013130309 - 2³⁵ = 21198653391941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21233013130339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10616506565154 + 10616506565155.

It is an arithmetic number, because the mean of its divisors is an integer number (10616506565155).

Almost surely, 2^{21233013130309} is an apocalyptic number.

It is an amenable number.

21233013130309 is a deficient number, since it is larger than the sum of its proper divisors (1).

21233013130309 is an equidigital number, since it uses as much as digits as its factorization.

21233013130309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8748, while the sum is 31.

The spelling of 21233013130309 in words is "twenty-one trillion, two hundred thirty-three billion, thirteen million, one hundred thirty thousand, three hundred nine".