21141243219 has 12 divisors (see below), whose sum is σ = 28590955208. Its totient is φ = 13895642880.

The previous prime is 21141243203. The next prime is 21141243229. The reversal of 21141243219 is 91234214112.

It is not a de Polignac number, because 21141243219 - 2⁴ = 21141243203 is a prime.

It is a super-2 number, since 2×21141243219² (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 (21141243229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 683854 + ... + 714099.

Almost surely, 2^21141243219 is an apocalyptic number.

21141243219 is a deficient number, since it is larger than the sum of its proper divisors (7449711989).

21141243219 is an equidigital number, since it uses as much as digits as its factorization.

21141243219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1398098 (or 1398027 counting only the distinct ones).

The product of its digits is 3456, while the sum is 30.

The spelling of 21141243219 in words is "twenty-one billion, one hundred forty-one million, two hundred forty-three thousand, two hundred nineteen".