21221130299 has 8 divisors (see below), whose sum is σ = 21336059472. Its totient is φ = 21106252800.

The previous prime is 21221130253. The next prime is 21221130313. The reversal of 21221130299 is 99203112212.

It is a happy number.

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 21221130299 - 2²⁴ = 21204353083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21221133299) 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, 1040399 + ... + 1060599.

It is an arithmetic number, because the mean of its divisors is an integer number (2667007434).

Almost surely, 2^21221130299 is an apocalyptic number.

21221130299 is a deficient number, since it is larger than the sum of its proper divisors (114929173).

21221130299 is a wasteful number, since it uses less digits than its factorization.

21221130299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25837.

The product of its (nonzero) digits is 3888, while the sum is 32.

The spelling of 21221130299 in words is "twenty-one billion, two hundred twenty-one million, one hundred thirty thousand, two hundred ninety-nine".