21200323219 has 4 divisors (see below), whose sum is σ = 21211903600. Its totient is φ = 21188742840.

The previous prime is 21200323187. The next prime is 21200323237. The reversal of 21200323219 is 91232300212.

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 21200323219 - 2⁵ = 21200323187 is a prime.

It is a super-2 number, since 2×21200323219² (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 = 21200323193 and 21200323202.

It is not an unprimeable number, because it can be changed into a prime (21200323259) 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, 5787444 + ... + 5791105.

It is an arithmetic number, because the mean of its divisors is an integer number (5302975900).

Almost surely, 2^21200323219 is an apocalyptic number.

21200323219 is a deficient number, since it is larger than the sum of its proper divisors (11580381).

21200323219 is a wasteful number, since it uses less digits than its factorization.

21200323219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11580380.

The product of its (nonzero) digits is 1296, while the sum is 25.

The spelling of 21200323219 in words is "twenty-one billion, two hundred million, three hundred twenty-three thousand, two hundred nineteen".