21033230039 has 2 divisors, whose sum is σ = 21033230040. Its totient is φ = 21033230038.

The previous prime is 21033229999. The next prime is 21033230077. The reversal of 21033230039 is 93003233012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21033230039 - 2²⁰ = 21032181463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21033235039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10516615019 + 10516615020.

It is an arithmetic number, because the mean of its divisors is an integer number (10516615020).

Almost surely, 2^21033230039 is an apocalyptic number.

21033230039 is a deficient number, since it is larger than the sum of its proper divisors (1).

21033230039 is an equidigital number, since it uses as much as digits as its factorization.

21033230039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 26.

The spelling of 21033230039 in words is "twenty-one billion, thirty-three million, two hundred thirty thousand, thirty-nine".