21322718099 has 8 divisors (see below), whose sum is σ = 22447375440. Its totient is φ = 20198301696.

The previous prime is 21322718069. The next prime is 21322718111. The reversal of 21322718099 is 99081722312.

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 21322718099 - 2¹² = 21322714003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21322718029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138227 + ... + 248499.

It is an arithmetic number, because the mean of its divisors is an integer number (2805921930).

Almost surely, 2^21322718099 is an apocalyptic number.

21322718099 is a deficient number, since it is larger than the sum of its proper divisors (1124657341).

21322718099 is a wasteful number, since it uses less digits than its factorization.

21322718099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120469.

The product of its (nonzero) digits is 108864, while the sum is 44.

The spelling of 21322718099 in words is "twenty-one billion, three hundred twenty-two million, seven hundred eighteen thousand, ninety-nine".