1131200101 has 4 divisors (see below), whose sum is σ = 1142400204. Its totient is φ = 1120000000.

The previous prime is 1131200087. The next prime is 1131200123. The reversal of 1131200101 is 1010021311.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 942797025 + 188403076 = 30705^2 + 13726^2 .

It is a cyclic number.

It is not a de Polignac number, because 1131200101 - 2¹⁵ = 1131167333 is a prime.

It is a super-3 number, since 3×1131200101³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131200141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5599900 + ... + 5600101.

It is an arithmetic number, because the mean of its divisors is an integer number (285600051).

Almost surely, 2^1131200101 is an apocalyptic number.

It is an amenable number.

1131200101 is a deficient number, since it is larger than the sum of its proper divisors (11200103).

1131200101 is a wasteful number, since it uses less digits than its factorization.

1131200101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11200102.

The product of its (nonzero) digits is 6, while the sum is 10.

The square root of 1131200101 is about 33633.3183168120. The cubic root of 1131200101 is about 1041.9490389200.

Adding to 1131200101 its reverse (1010021311), we get a palindrome (2141221412).

The spelling of 1131200101 in words is "one billion, one hundred thirty-one million, two hundred thousand, one hundred one".