1105111999 has 2 divisors, whose sum is σ = 1105112000. Its totient is φ = 1105111998.

The previous prime is 1105111993. The next prime is 1105112009. The reversal of 1105111999 is 9991115011.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1105111999 - 2⁷ = 1105111871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1105111993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 552555999 + 552556000.

It is an arithmetic number, because the mean of its divisors is an integer number (552556000).

Almost surely, 2^1105111999 is an apocalyptic number.

1105111999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1105111999 is an equidigital number, since it uses as much as digits as its factorization.

1105111999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3645, while the sum is 37.

The square root of 1105111999 is about 33243.2248586084. The cubic root of 1105111999 is about 1033.8767401181.

The spelling of 1105111999 in words is "one billion, one hundred five million, one hundred eleven thousand, nine hundred ninety-nine".