1123140201 has 4 divisors (see below), whose sum is σ = 1497520272. Its totient is φ = 748760132.

The previous prime is 1123140197. The next prime is 1123140211. The reversal of 1123140201 is 1020413211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1123140201 - 2² = 1123140197 is a prime.

It is a super-2 number, since 2×1123140201² = 2522887822204640802, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1123140211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187190031 + ... + 187190036.

It is an arithmetic number, because the mean of its divisors is an integer number (374380068).

Almost surely, 2^1123140201 is an apocalyptic number.

It is an amenable number.

1123140201 is a deficient number, since it is larger than the sum of its proper divisors (374380071).

1123140201 is an equidigital number, since it uses as much as digits as its factorization.

1123140201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374380070.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1123140201 is about 33513.2839483092. The cubic root of 1123140201 is about 1039.4684787055.

Adding to 1123140201 its reverse (1020413211), we get a palindrome (2143553412).

The spelling of 1123140201 in words is "one billion, one hundred twenty-three million, one hundred forty thousand, two hundred one".