20021233099 has 8 divisors (see below), whose sum is σ = 23619519488. Its totient is φ = 16607474280.

The previous prime is 20021233073. The next prime is 20021233151. The reversal of 20021233099 is 99033212002.

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 20021233099 - 2¹⁷ = 20021102027 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20021233099.

It is not an unprimeable number, because it can be changed into a prime (20021233049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46131657 + ... + 46132090.

It is an arithmetic number, because the mean of its divisors is an integer number (2952439936).

Almost surely, 2^20021233099 is an apocalyptic number.

20021233099 is a deficient number, since it is larger than the sum of its proper divisors (3598286389).

20021233099 is an equidigital number, since it uses as much as digits as its factorization.

20021233099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92263785.

The product of its (nonzero) digits is 5832, while the sum is 31.

The spelling of 20021233099 in words is "twenty billion, twenty-one million, two hundred thirty-three thousand, ninety-nine".