1131112201 has 12 divisors (see below), whose sum is σ = 1175477212. Its totient is φ = 1088365824.

The previous prime is 1131112189. The next prime is 1131112261. The reversal of 1131112201 is 1022111311.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 105575625 + 1025536576 = 10275^2 + 32024^2 .

It is not a de Polignac number, because 1131112201 - 2¹⁷ = 1130981129 is a prime.

It is a super-2 number, since 2×1131112201² = 2558829622502128802, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131112261) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 261085 + ... + 265381.

Almost surely, 2^1131112201 is an apocalyptic number.

It is an amenable number.

1131112201 is a deficient number, since it is larger than the sum of its proper divisors (44365011).

1131112201 is an equidigital number, since it uses as much as digits as its factorization.

1131112201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4668 (or 4639 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 13.

The square root of 1131112201 is about 33632.0115514966. The cubic root of 1131112201 is about 1041.9220499747.

Adding to 1131112201 its reverse (1022111311), we get a palindrome (2153223512).

The spelling of 1131112201 in words is "one billion, one hundred thirty-one million, one hundred twelve thousand, two hundred one".