21302230259 has 2 divisors, whose sum is σ = 21302230260. Its totient is φ = 21302230258.

The previous prime is 21302230219. The next prime is 21302230337. The reversal of 21302230259 is 95203220312.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21302230259 is a prime.

It is not a weakly prime, because it can be changed into another prime (21302230219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10651115129 + 10651115130.

It is an arithmetic number, because the mean of its divisors is an integer number (10651115130).

Almost surely, 2^21302230259 is an apocalyptic number.

21302230259 is a deficient number, since it is larger than the sum of its proper divisors (1).

21302230259 is an equidigital number, since it uses as much as digits as its factorization.

21302230259 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 29.

The spelling of 21302230259 in words is "twenty-one billion, three hundred two million, two hundred thirty thousand, two hundred fifty-nine".