21002021302259 has 2 divisors, whose sum is σ = 21002021302260. Its totient is φ = 21002021302258.

The previous prime is 21002021302211. The next prime is 21002021302331. The reversal of 21002021302259 is 95220312020012.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21002021302259 is a prime.

It is not a weakly prime, because it can be changed into another prime (21002021302459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10501010651129 + 10501010651130.

It is an arithmetic number, because the mean of its divisors is an integer number (10501010651130).

Almost surely, 2^{21002021302259} is an apocalyptic number.

21002021302259 is a deficient number, since it is larger than the sum of its proper divisors (1).

21002021302259 is an equidigital number, since it uses as much as digits as its factorization.

21002021302259 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 29.

The spelling of 21002021302259 in words is "twenty-one trillion, two billion, twenty-one million, three hundred two thousand, two hundred fifty-nine".