1101561133 has 2 divisors, whose sum is σ = 1101561134. Its totient is φ = 1101561132.

The previous prime is 1101561101. The next prime is 1101561163. The reversal of 1101561133 is 3311651011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 914336644 + 187224489 = 30238^2 + 13683^2 .

It is a cyclic number.

It is not a de Polignac number, because 1101561133 - 2⁵ = 1101561101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1101561163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550780566 + 550780567.

It is an arithmetic number, because the mean of its divisors is an integer number (550780567).

Almost surely, 2^1101561133 is an apocalyptic number.

It is an amenable number.

1101561133 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101561133 is an equidigital number, since it uses as much as digits as its factorization.

1101561133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 270, while the sum is 22.

The square root of 1101561133 is about 33189.7745246936. The cubic root of 1101561133 is about 1032.7682259982.

The spelling of 1101561133 in words is "one billion, one hundred one million, five hundred sixty-one thousand, one hundred thirty-three".