1111213311 has 16 divisors (see below), whose sum is σ = 1596870240. Its totient is φ = 683274240.

The previous prime is 1111213303. The next prime is 1111213319. The reversal of 1111213311 is 1133121111.

It is an interprime number because it is at equal distance from previous prime (1111213303) and next prime (1111213319).

It is not a de Polignac number, because 1111213311 - 2³ = 1111213303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111213319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40735 + ... + 62303.

It is an arithmetic number, because the mean of its divisors is an integer number (99804390).

Almost surely, 2^1111213311 is an apocalyptic number.

1111213311 is a deficient number, since it is larger than the sum of its proper divisors (485656929).

1111213311 is a wasteful number, since it uses less digits than its factorization.

1111213311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22906.

The product of its digits is 18, while the sum is 15.

The square root of 1111213311 is about 33334.8662964170. The cubic root of 1111213311 is about 1035.7759235594.

Adding to 1111213311 its reverse (1133121111), we get a palindrome (2244334422).

The spelling of 1111213311 in words is "one billion, one hundred eleven million, two hundred thirteen thousand, three hundred eleven".