20021223299 has 16 divisors (see below), whose sum is σ = 24980749056. Its totient is φ = 15588938400.

The previous prime is 20021223293. The next prime is 20021223307. The reversal of 20021223299 is 99232212002.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-20021223299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20021223293) 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 15 ways as a sum of consecutive naturals, for example, 1169 + ... + 200109.

It is an arithmetic number, because the mean of its divisors is an integer number (1561296816).

Almost surely, 2^20021223299 is an apocalyptic number.

20021223299 is a deficient number, since it is larger than the sum of its proper divisors (4959525757).

20021223299 is a wasteful number, since it uses less digits than its factorization.

20021223299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200266.

The product of its (nonzero) digits is 7776, while the sum is 32.

The spelling of 20021223299 in words is "twenty billion, twenty-one million, two hundred twenty-three thousand, two hundred ninety-nine".