21002214419 has 2 divisors, whose sum is σ = 21002214420. Its totient is φ = 21002214418.

The previous prime is 21002214403. The next prime is 21002214449. The reversal of 21002214419 is 91441220012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21002214419 - 2⁴ = 21002214403 is a prime.

It is a super-2 number, since 2×21002214419² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21002214449) 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, 10501107209 + 10501107210.

It is an arithmetic number, because the mean of its divisors is an integer number (10501107210).

Almost surely, 2^21002214419 is an apocalyptic number.

21002214419 is a deficient number, since it is larger than the sum of its proper divisors (1).

21002214419 is an equidigital number, since it uses as much as digits as its factorization.

21002214419 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 26.

The spelling of 21002214419 in words is "twenty-one billion, two million, two hundred fourteen thousand, four hundred nineteen".