1101112231 has 2 divisors, whose sum is σ = 1101112232. Its totient is φ = 1101112230.

The previous prime is 1101112163. The next prime is 1101112249. The reversal of 1101112231 is 1322111011.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1101112231 is a prime.

It is a super-2 number, since 2×1101112231² = 2424896290515594722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1101112261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550556115 + 550556116.

It is an arithmetic number, because the mean of its divisors is an integer number (550556116).

Almost surely, 2^1101112231 is an apocalyptic number.

1101112231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101112231 is an equidigital number, since it uses as much as digits as its factorization.

1101112231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 13.

The square root of 1101112231 is about 33183.0111804218. The cubic root of 1101112231 is about 1032.6279176369.

Adding to 1101112231 its reverse (1322111011), we get a palindrome (2423223242).

The spelling of 1101112231 in words is "one billion, one hundred one million, one hundred twelve thousand, two hundred thirty-one".