21232230099 has 16 divisors (see below), whose sum is σ = 29238751872. Its totient is φ = 13696417728.

The previous prime is 21232230077. The next prime is 21232230127. The reversal of 21232230099 is 99003223212.

It is not a de Polignac number, because 21232230099 - 2⁷ = 21232229971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21232230049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 755314 + ... + 782919.

It is an arithmetic number, because the mean of its divisors is an integer number (1827421992).

Almost surely, 2^21232230099 is an apocalyptic number.

21232230099 is a deficient number, since it is larger than the sum of its proper divisors (8006521773).

21232230099 is a wasteful number, since it uses less digits than its factorization.

21232230099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1538386.

The product of its (nonzero) digits is 11664, while the sum is 33.

The spelling of 21232230099 in words is "twenty-one billion, two hundred thirty-two million, two hundred thirty thousand, ninety-nine".