11112133331 has 4 divisors (see below), whose sum is σ = 11966912832. Its totient is φ = 10257353832.

The previous prime is 11112133321. The next prime is 11112133367. The reversal of 11112133331 is 13333121111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13333121111 = 31 ⋅430100681.

It is a cyclic number.

It is not a de Polignac number, because 11112133331 - 2¹⁴ = 11112116947 is a prime.

It is a super-2 number, since 2×11112133331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11112133301) 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, 427389731 + ... + 427389756.

It is an arithmetic number, because the mean of its divisors is an integer number (2991728208).

Almost surely, 2^11112133331 is an apocalyptic number.

11112133331 is a deficient number, since it is larger than the sum of its proper divisors (854779501).

11112133331 is an equidigital number, since it uses as much as digits as its factorization.

11112133331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 854779500.

The product of its digits is 162, while the sum is 20.

Adding to 11112133331 its reverse (13333121111), we get a palindrome (24445254442).

The spelling of 11112133331 in words is "eleven billion, one hundred twelve million, one hundred thirty-three thousand, three hundred thirty-one".