21202310219 has 2 divisors, whose sum is σ = 21202310220. Its totient is φ = 21202310218.

The previous prime is 21202310191. The next prime is 21202310267. The reversal of 21202310219 is 91201320212.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21202310219 - 2⁸ = 21202309963 is a prime.

It is a super-2 number, since 2×21202310219² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21202310194 and 21202310203.

It is not a weakly prime, because it can be changed into another prime (21202310299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10601155109 + 10601155110.

It is an arithmetic number, because the mean of its divisors is an integer number (10601155110).

Almost surely, 2^21202310219 is an apocalyptic number.

21202310219 is a deficient number, since it is larger than the sum of its proper divisors (1).

21202310219 is an equidigital number, since it uses as much as digits as its factorization.

21202310219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 23.

The spelling of 21202310219 in words is "twenty-one billion, two hundred two million, three hundred ten thousand, two hundred nineteen".