21040022519 has 2 divisors, whose sum is σ = 21040022520. Its totient is φ = 21040022518.

The previous prime is 21040022503. The next prime is 21040022537. The reversal of 21040022519 is 91522004012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21040022519 - 2⁴ = 21040022503 is a prime.

It is a super-2 number, since 2×21040022519² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21040022819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10520011259 + 10520011260.

It is an arithmetic number, because the mean of its divisors is an integer number (10520011260).

Almost surely, 2^21040022519 is an apocalyptic number.

21040022519 is a deficient number, since it is larger than the sum of its proper divisors (1).

21040022519 is an equidigital number, since it uses as much as digits as its factorization.

21040022519 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 26.

The spelling of 21040022519 in words is "twenty-one billion, forty million, twenty-two thousand, five hundred nineteen".