21132103313 has 4 divisors (see below), whose sum is σ = 21132491760. Its totient is φ = 21131714868.

The previous prime is 21132103301. The next prime is 21132103319. The reversal of 21132103313 is 31330123112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21132103313 - 2¹² = 21132099217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21132103319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96095 + ... + 226932.

It is an arithmetic number, because the mean of its divisors is an integer number (5283122940).

Almost surely, 2^21132103313 is an apocalyptic number.

It is an amenable number.

21132103313 is a deficient number, since it is larger than the sum of its proper divisors (388447).

21132103313 is an equidigital number, since it uses as much as digits as its factorization.

21132103313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388446.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 21132103313 its reverse (31330123112), we get a palindrome (52462226425).

The spelling of 21132103313 in words is "twenty-one billion, one hundred thirty-two million, one hundred three thousand, three hundred thirteen".