1111661107 has 2 divisors, whose sum is σ = 1111661108. Its totient is φ = 1111661106.

The previous prime is 1111661071. The next prime is 1111661149. The reversal of 1111661107 is 7011661111.

Together with previous prime (1111661071) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1111661107 - 2¹⁵ = 1111628339 is a prime.

It is not a weakly prime, because it can be changed into another prime (1111664107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555830553 + 555830554.

It is an arithmetic number, because the mean of its divisors is an integer number (555830554).

Almost surely, 2^1111661107 is an apocalyptic number.

1111661107 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111661107 is an equidigital number, since it uses as much as digits as its factorization.

1111661107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252, while the sum is 25.

The square root of 1111661107 is about 33341.5822509970. The cubic root of 1111661107 is about 1035.9150369717.

The spelling of 1111661107 in words is "one billion, one hundred eleven million, six hundred sixty-one thousand, one hundred seven".