233220011 has 4 divisors (see below), whose sum is σ = 233597400. Its totient is φ = 232842624.

The previous prime is 233219999. The next prime is 233220049. The reversal of 233220011 is 110022332.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 233220011 - 2⁶ = 233219947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (233220811) 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, 187766 + ... + 189003.

It is an arithmetic number, because the mean of its divisors is an integer number (58399350).

Almost surely, 2^233220011 is an apocalyptic number.

233220011 is a deficient number, since it is larger than the sum of its proper divisors (377389).

233220011 is an equidigital number, since it uses as much as digits as its factorization.

233220011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377388.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 233220011 is about 15271.5425219589. The cubic root of 233220011 is about 615.5385689202.

Adding to 233220011 its reverse (110022332), we get a palindrome (343242343).

The spelling of 233220011 in words is "two hundred thirty-three million, two hundred twenty thousand, eleven".