1123333201 has 4 divisors (see below), whose sum is σ = 1130872500. Its totient is φ = 1115793904.

The previous prime is 1123333177. The next prime is 1123333207. The reversal of 1123333201 is 1023333211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1023333211 = 557 ⋅1837223.

It can be written as a sum of positive squares in 2 ways, for example, as 77457601 + 1045875600 = 8801^2 + 32340^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123333201 - 2²⁵ = 1089778769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1123333207) 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, 3769426 + ... + 3769723.

It is an arithmetic number, because the mean of its divisors is an integer number (282718125).

Almost surely, 2^1123333201 is an apocalyptic number.

It is an amenable number.

1123333201 is a deficient number, since it is larger than the sum of its proper divisors (7539299).

1123333201 is an equidigital number, since it uses as much as digits as its factorization.

1123333201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7539298.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 1123333201 is about 33516.1632798266. The cubic root of 1123333201 is about 1039.5280159227.

Adding to 1123333201 its reverse (1023333211), we get a palindrome (2146666412).

The spelling of 1123333201 in words is "one billion, one hundred twenty-three million, three hundred thirty-three thousand, two hundred one".