21022000021499 has 2 divisors, whose sum is σ = 21022000021500. Its totient is φ = 21022000021498.

The previous prime is 21022000021439. The next prime is 21022000021501. The reversal of 21022000021499 is 99412000022012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21022000021499 - 2²⁸ = 21021731586043 is a prime.

Together with 21022000021501, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (21022000021439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10511000010749 + 10511000010750.

It is an arithmetic number, because the mean of its divisors is an integer number (10511000010750).

Almost surely, 2^{21022000021499} is an apocalyptic number.

21022000021499 is a deficient number, since it is larger than the sum of its proper divisors (1).

21022000021499 is an equidigital number, since it uses as much as digits as its factorization.

21022000021499 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 32.

The spelling of 21022000021499 in words is "twenty-one trillion, twenty-two billion, twenty-one thousand, four hundred ninety-nine".