20120233 has 6 divisors (see below), whose sum is σ = 23405226. Its totient is φ = 17245872.

The previous prime is 20120213. The next prime is 20120237. The reversal of 20120233 is 33202102.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 11102224 + 9018009 = 3332^2 + 3003^2 .

It is not a de Polignac number, because 20120233 - 2²¹ = 18023081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20120237) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 205260 + ... + 205357.

It is an arithmetic number, because the mean of its divisors is an integer number (3900871).

Almost surely, 2^20120233 is an apocalyptic number.

It is an amenable number.

20120233 is a deficient number, since it is larger than the sum of its proper divisors (3284993).

20120233 is an equidigital number, since it uses as much as digits as its factorization.

20120233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410631 (or 410624 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 20120233 is about 4485.5582707173. The cubic root of 20120233 is about 271.9846129199.

Adding to 20120233 its reverse (33202102), we get a palindrome (53322335).

The spelling of 20120233 in words is "twenty million, one hundred twenty thousand, two hundred thirty-three".