20233221009 has 8 divisors (see below), whose sum is σ = 26980749312. Its totient is φ = 13487253360.

The previous prime is 20233220993. The next prime is 20233221013. The reversal of 20233221009 is 90012233202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20233221009 - 2⁴ = 20233220993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20233221009.

It is not an unprimeable number, because it can be changed into a prime (20233221209) 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, 359569 + ... + 412014.

It is an arithmetic number, because the mean of its divisors is an integer number (3372593664).

Almost surely, 2^20233221009 is an apocalyptic number.

It is an amenable number.

20233221009 is a deficient number, since it is larger than the sum of its proper divisors (6747528303).

20233221009 is an equidigital number, since it uses as much as digits as its factorization.

20233221009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 780327.

The product of its (nonzero) digits is 1296, while the sum is 24.

The spelling of 20233221009 in words is "twenty billion, two hundred thirty-three million, two hundred twenty-one thousand, nine".