21321369419 has 8 divisors (see below), whose sum is σ = 24410108640. Its totient is φ = 18243337536.

The previous prime is 21321369413. The next prime is 21321369463. The reversal of 21321369419 is 91496312312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21321369419 - 2¹² = 21321365323 is a prime.

It is a super-2 number, since 2×21321369419² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21321369413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2672564 + ... + 2680529.

It is an arithmetic number, because the mean of its divisors is an integer number (3051263580).

Almost surely, 2^21321369419 is an apocalyptic number.

21321369419 is a deficient number, since it is larger than the sum of its proper divisors (3088739221).

21321369419 is an equidigital number, since it uses as much as digits as its factorization.

21321369419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5353669.

The product of its digits is 69984, while the sum is 41.

The spelling of 21321369419 in words is "twenty-one billion, three hundred twenty-one million, three hundred sixty-nine thousand, four hundred nineteen".