21022002619 has 2 divisors, whose sum is σ = 21022002620. Its totient is φ = 21022002618.

The previous prime is 21022002601. The next prime is 21022002623. The reversal of 21022002619 is 91620022012.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21022002619 is a prime.

It is a super-2 number, since 2×21022002619² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21022002593 and 21022002602.

It is not a weakly prime, because it can be changed into another prime (21022002649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10511001309 + 10511001310.

It is an arithmetic number, because the mean of its divisors is an integer number (10511001310).

Almost surely, 2^21022002619 is an apocalyptic number.

21022002619 is a deficient number, since it is larger than the sum of its proper divisors (1).

21022002619 is an equidigital number, since it uses as much as digits as its factorization.

21022002619 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The spelling of 21022002619 in words is "twenty-one billion, twenty-two million, two thousand, six hundred nineteen".