21300312419 has 2 divisors, whose sum is σ = 21300312420. Its totient is φ = 21300312418.

The previous prime is 21300312391. The next prime is 21300312479. The reversal of 21300312419 is 91421300312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21300312419 - 2²⁸ = 21031876963 is a prime.

It is a super-2 number, since 2×21300312419² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21300312479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10650156209 + 10650156210.

It is an arithmetic number, because the mean of its divisors is an integer number (10650156210).

Almost surely, 2^21300312419 is an apocalyptic number.

21300312419 is a deficient number, since it is larger than the sum of its proper divisors (1).

21300312419 is an equidigital number, since it uses as much as digits as its factorization.

21300312419 is an evil number, because the sum of its binary digits is even.

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

The spelling of 21300312419 in words is "twenty-one billion, three hundred million, three hundred twelve thousand, four hundred nineteen".