1101111023 has 2 divisors, whose sum is σ = 1101111024. Its totient is φ = 1101111022.

The previous prime is 1101111013. The next prime is 1101111071. The reversal of 1101111023 is 3201111011.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1101111023 - 2²² = 1096916719 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 1101110995 and 1101111013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1101111013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550555511 + 550555512.

It is an arithmetic number, because the mean of its divisors is an integer number (550555512).

Almost surely, 2^1101111023 is an apocalyptic number.

1101111023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101111023 is an equidigital number, since it uses as much as digits as its factorization.

1101111023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6, while the sum is 11.

The square root of 1101111023 is about 33182.9929783315. The cubic root of 1101111023 is about 1032.6275400141.

Adding to 1101111023 its reverse (3201111011), we get a palindrome (4302222034).

The spelling of 1101111023 in words is "one billion, one hundred one million, one hundred eleven thousand, twenty-three".