1081200133 has 8 divisors (see below), whose sum is σ = 1167829208. Its totient is φ = 995065344.

The previous prime is 1081200097. The next prime is 1081200137. The reversal of 1081200133 is 3310021801.

It can be written as a sum of positive squares in 4 ways, for example, as 83777409 + 997422724 = 9153^2 + 31582^2 .

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

It is not a de Polignac number, because 1081200133 - 2¹⁷ = 1081069061 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1081200133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081200137) 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, 119016 + ... + 127777.

It is an arithmetic number, because the mean of its divisors is an integer number (145978651).

Almost surely, 2^1081200133 is an apocalyptic number.

1081200133 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1081200133 is a deficient number, since it is larger than the sum of its proper divisors (86629075).

1081200133 is a wasteful number, since it uses less digits than its factorization.

1081200133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247143.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1081200133 is about 32881.6078226111. The cubic root of 1081200133 is about 1026.3654640938.

Adding to 1081200133 its reverse (3310021801), we get a palindrome (4391221934).

The spelling of 1081200133 in words is "one billion, eighty-one million, two hundred thousand, one hundred thirty-three".