21320113019 has 8 divisors (see below), whose sum is σ = 22060913760. Its totient is φ = 20579687296.

The previous prime is 21320112991. The next prime is 21320113021. The reversal of 21320113019 is 91031102312.

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 21320113019 - 2²⁰ = 21319064443 is a prime.

It is a super-2 number, since 2×21320113019² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21320112985 and 21320113003.

It is not an unprimeable number, because it can be changed into a prime (21320119019) 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, 24467 + ... + 207939.

It is an arithmetic number, because the mean of its divisors is an integer number (2757614220).

Almost surely, 2^21320113019 is an apocalyptic number.

21320113019 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

21320113019 is a deficient number, since it is larger than the sum of its proper divisors (740800741).

21320113019 is a wasteful number, since it uses less digits than its factorization.

21320113019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187509.

The product of its (nonzero) digits is 324, while the sum is 23.

The spelling of 21320113019 in words is "twenty-one billion, three hundred twenty million, one hundred thirteen thousand, nineteen".