1135561101 has 8 divisors (see below), whose sum is σ = 1522834080. Its totient is φ = 752664432.

The previous prime is 1135561081. The next prime is 1135561109. The reversal of 1135561101 is 1011655311.

It is a happy number.

1135561101 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1135561101 - 2¹¹ = 1135559053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1135561109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1093471 + ... + 1094508.

It is an arithmetic number, because the mean of its divisors is an integer number (190354260).

Almost surely, 2^1135561101 is an apocalyptic number.

It is an amenable number.

1135561101 is a deficient number, since it is larger than the sum of its proper divisors (387272979).

1135561101 is a wasteful number, since it uses less digits than its factorization.

1135561101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2188155.

The product of its (nonzero) digits is 450, while the sum is 24.

The square root of 1135561101 is about 33698.0874976608. The cubic root of 1135561101 is about 1043.2862950981.

The spelling of 1135561101 in words is "one billion, one hundred thirty-five million, five hundred sixty-one thousand, one hundred one".