1133220111 has 32 divisors (see below), whose sum is σ = 1564213248. Its totient is φ = 729479520.

The previous prime is 1133220107. The next prime is 1133220163. The reversal of 1133220111 is 1110223311.

It is a happy number.

It is not a de Polignac number, because 1133220111 - 2² = 1133220107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1133220311) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2629066 + ... + 2629496.

It is an arithmetic number, because the mean of its divisors is an integer number (48881664).

Almost surely, 2^1133220111 is an apocalyptic number.

1133220111 is a deficient number, since it is larger than the sum of its proper divisors (430993137).

1133220111 is a wasteful number, since it uses less digits than its factorization.

1133220111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1133220111 is about 33663.3348169785. The cubic root of 1133220111 is about 1042.5688808872.

Adding to 1133220111 its reverse (1110223311), we get a palindrome (2243443422).

The spelling of 1133220111 in words is "one billion, one hundred thirty-three million, two hundred twenty thousand, one hundred eleven".