21022002319 has 2 divisors, whose sum is σ = 21022002320. Its totient is φ = 21022002318.

The previous prime is 21022002271. The next prime is 21022002377. The reversal of 21022002319 is 91320022012.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21022002319 is a prime.

It is a super-2 number, since 2×21022002319² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21022002319.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21022002619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10511001159 + 10511001160.

It is an arithmetic number, because the mean of its divisors is an integer number (10511001160).

Almost surely, 2^21022002319 is an apocalyptic number.

21022002319 is a deficient number, since it is larger than the sum of its proper divisors (1).

21022002319 is an equidigital number, since it uses as much as digits as its factorization.

21022002319 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

The spelling of 21022002319 in words is "twenty-one billion, twenty-two million, two thousand, three hundred nineteen".