21013322219 has 4 divisors (see below), whose sum is σ = 21013909344. Its totient is φ = 21012735096.

The previous prime is 21013322203. The next prime is 21013322233. The reversal of 21013322219 is 91222331012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21013322219 - 2⁴ = 21013322203 is a prime.

It is a super-2 number, since 2×21013322219² (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 (21013322279) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 236132 + ... + 312705.

It is an arithmetic number, because the mean of its divisors is an integer number (5253477336).

Almost surely, 2^21013322219 is an apocalyptic number.

21013322219 is a deficient number, since it is larger than the sum of its proper divisors (587125).

21013322219 is an equidigital number, since it uses as much as digits as its factorization.

21013322219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587124.

The product of its (nonzero) digits is 1296, while the sum is 26.

The spelling of 21013322219 in words is "twenty-one billion, thirteen million, three hundred twenty-two thousand, two hundred nineteen".