20232133220 has 48 divisors (see below), whose sum is σ = 45783526320. Its totient is φ = 7465790976.

The previous prime is 20232133217. The next prime is 20232133237. The reversal of 20232133220 is 2233123202.

It can be written as a sum of positive squares in 8 ways, for example, as 3615376384 + 16616756836 = 60128^2 + 128906^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 20232133192 and 20232133201.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 421574 + ... + 467106.

It is an arithmetic number, because the mean of its divisors is an integer number (953823465).

Almost surely, 2^20232133220 is an apocalyptic number.

20232133220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20232133220 is an abundant number, since it is smaller than the sum of its proper divisors (25551393100).

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

20232133220 is a wasteful number, since it uses less digits than its factorization.

20232133220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47264 (or 47262 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 20232133220 its reverse (2233123202), we get a palindrome (22465256422).

The spelling of 20232133220 in words is "twenty billion, two hundred thirty-two million, one hundred thirty-three thousand, two hundred twenty".