21103232099 has 8 divisors (see below), whose sum is σ = 21158221248. Its totient is φ = 21048314560.

The previous prime is 21103232027. The next prime is 21103232107. The reversal of 21103232099 is 99023230112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21103232099 - 2²⁸ = 20834796643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21103232009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 599639 + ... + 633855.

It is an arithmetic number, because the mean of its divisors is an integer number (2644777656).

Almost surely, 2^21103232099 is an apocalyptic number.

21103232099 is a deficient number, since it is larger than the sum of its proper divisors (54989149).

21103232099 is an equidigital number, since it uses as much as digits as its factorization.

21103232099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35805.

The product of its (nonzero) digits is 5832, while the sum is 32.

The spelling of 21103232099 in words is "twenty-one billion, one hundred three million, two hundred thirty-two thousand, ninety-nine".