1123210201331 has 4 divisors (see below), whose sum is σ = 1123292255064. Its totient is φ = 1123128147600.

The previous prime is 1123210201327. The next prime is 1123210201343. The reversal of 1123210201331 is 1331020123211.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1123210201331 - 2² = 1123210201327 is a prime.

It is a super-2 number, since 2×1123210201331² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1123210207331) 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, 41006330 + ... + 41033711.

It is an arithmetic number, because the mean of its divisors is an integer number (280823063766).

Almost surely, 2^{1123210201331} is an apocalyptic number.

1123210201331 is a deficient number, since it is larger than the sum of its proper divisors (82053733).

1123210201331 is an equidigital number, since it uses as much as digits as its factorization.

1123210201331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82053732.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1123210201331 its reverse (1331020123211), we get a palindrome (2454230324542).

The spelling of 1123210201331 in words is "one trillion, one hundred twenty-three billion, two hundred ten million, two hundred one thousand, three hundred thirty-one".