1131200201 has 4 divisors (see below), whose sum is σ = 1136942532. Its totient is φ = 1125457872.

The previous prime is 1131200197. The next prime is 1131200219. The reversal of 1131200201 is 1020021311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1020021311 = 24251 ⋅42061.

It can be written as a sum of positive squares in 2 ways, for example, as 773952400 + 357247801 = 27820^2 + 18901^2 .

It is a cyclic number.

It is not a de Polignac number, because 1131200201 - 2² = 1131200197 is a prime.

It is a super-2 number, since 2×1131200201² = 2559227789484880802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131200251) 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, 2870870 + ... + 2871263.

It is an arithmetic number, because the mean of its divisors is an integer number (284235633).

Almost surely, 2^1131200201 is an apocalyptic number.

It is an amenable number.

1131200201 is a deficient number, since it is larger than the sum of its proper divisors (5742331).

1131200201 is an equidigital number, since it uses as much as digits as its factorization.

1131200201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5742330.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1131200201 is about 33633.3198034330. The cubic root of 1131200201 is about 1041.9490696234.

Adding to 1131200201 its reverse (1020021311), we get a palindrome (2151221512).

The spelling of 1131200201 in words is "one billion, one hundred thirty-one million, two hundred thousand, two hundred one".