1011111133 has 2 divisors, whose sum is σ = 1011111134. Its totient is φ = 1011111132.

The previous prime is 1011111083. The next prime is 1011111149. The reversal of 1011111133 is 3311111101.

1011111133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 733488889 + 277622244 = 27083^2 + 16662^2 .

It is a cyclic number.

It is not a de Polignac number, because 1011111133 - 2⁹ = 1011110621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1011111433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505555566 + 505555567.

It is an arithmetic number, because the mean of its divisors is an integer number (505555567).

Almost surely, 2^1011111133 is an apocalyptic number.

It is an amenable number.

1011111133 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011111133 is an equidigital number, since it uses as much as digits as its factorization.

1011111133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9, while the sum is 13.

The square root of 1011111133 is about 31797.9737247517. The cubic root of 1011111133 is about 1003.6900775786.

Adding to 1011111133 its reverse (3311111101), we get a palindrome (4322222234).

The spelling of 1011111133 in words is "one billion, eleven million, one hundred eleven thousand, one hundred thirty-three".