220100233 has 4 divisors (see below), whose sum is σ = 220319380. Its totient is φ = 219881088.

The previous prime is 220100171. The next prime is 220100291. The reversal of 220100233 is 332001022.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 126630009 + 93470224 = 11253^2 + 9668^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220100233 is a prime.

It is a super-2 number, since 2×220100233² = 96888225133308578, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220104233) 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, 108060 + ... + 110077.

It is an arithmetic number, because the mean of its divisors is an integer number (55079845).

Almost surely, 2^220100233 is an apocalyptic number.

It is an amenable number.

220100233 is a deficient number, since it is larger than the sum of its proper divisors (219147).

220100233 is a wasteful number, since it uses less digits than its factorization.

220100233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219146.

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

The square root of 220100233 is about 14835.7754431644. The cubic root of 220100233 is about 603.7727397071.

Adding to 220100233 its reverse (332001022), we get a palindrome (552101255).

The spelling of 220100233 in words is "two hundred twenty million, one hundred thousand, two hundred thirty-three".