220233001 has 4 divisors (see below), whose sum is σ = 220823812. Its totient is φ = 219642192.

The previous prime is 220232993. The next prime is 220233007. The reversal of 220233001 is 100332022.

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 91183401 + 129049600 = 9549^2 + 11360^2 .

It is a cyclic number.

It is not a de Polignac number, because 220233001 - 2³ = 220232993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220233007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 294846 + ... + 295591.

It is an arithmetic number, because the mean of its divisors is an integer number (55205953).

Almost surely, 2^220233001 is an apocalyptic number.

It is an amenable number.

220233001 is a deficient number, since it is larger than the sum of its proper divisors (590811).

220233001 is an equidigital number, since it uses as much as digits as its factorization.

220233001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590810.

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

The square root of 220233001 is about 14840.2493577433. The cubic root of 220233001 is about 603.8941171134.

Adding to 220233001 its reverse (100332022), we get a palindrome (320565023).

The spelling of 220233001 in words is "two hundred twenty million, two hundred thirty-three thousand, one".