20233204220 has 12 divisors (see below), whose sum is σ = 42489728904. Its totient is φ = 8093281680.

The previous prime is 20233204183. The next prime is 20233204223. The reversal of 20233204220 is 2240233202.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 1011660211 = 20233204220 / (2 + 0 + 2 + 3 + 3 + 2 + 0 + 4 + 2 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 20233204192 and 20233204201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20233204223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 505830086 + ... + 505830125.

It is an arithmetic number, because the mean of its divisors is an integer number (3540810742).

Almost surely, 2^20233204220 is an apocalyptic number.

20233204220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20233204220 is an abundant number, since it is smaller than the sum of its proper divisors (22256524684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20233204220 is a wasteful number, since it uses less digits than its factorization.

20233204220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1011660220 (or 1011660218 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

Adding to 20233204220 its reverse (2240233202), we get a palindrome (22473437422).

The spelling of 20233204220 in words is "twenty billion, two hundred thirty-three million, two hundred four thousand, two hundred twenty".