21102013319 has 2 divisors, whose sum is σ = 21102013320. Its totient is φ = 21102013318.

The previous prime is 21102013307. The next prime is 21102013381. The reversal of 21102013319 is 91331020112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21102013319 - 2¹² = 21102009223 is a prime.

It is a super-2 number, since 2×21102013319² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21102013294 and 21102013303.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21102016319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10551006659 + 10551006660.

It is an arithmetic number, because the mean of its divisors is an integer number (10551006660).

Almost surely, 2^21102013319 is an apocalyptic number.

21102013319 is a deficient number, since it is larger than the sum of its proper divisors (1).

21102013319 is an equidigital number, since it uses as much as digits as its factorization.

21102013319 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 21102013319 in words is "twenty-one billion, one hundred two million, thirteen thousand, three hundred nineteen".