1123231123001 has 4 divisors (see below), whose sum is σ = 1209633517092. Its totient is φ = 1036828728912.

The previous prime is 1123231122997. The next prime is 1123231123019. The reversal of 1123231123001 is 1003211323211.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 355425822976 + 767805300025 = 596176^2 + 876245^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123231123001 - 2² = 1123231122997 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1123231123081) 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, 43201197026 + ... + 43201197051.

It is an arithmetic number, because the mean of its divisors is an integer number (302408379273).

Almost surely, 2^{1123231123001} is an apocalyptic number.

It is an amenable number.

1123231123001 is a deficient number, since it is larger than the sum of its proper divisors (86402394091).

1123231123001 is an equidigital number, since it uses as much as digits as its factorization.

1123231123001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86402394090.

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

Adding to 1123231123001 its reverse (1003211323211), we get a palindrome (2126442446212).

The spelling of 1123231123001 in words is "one trillion, one hundred twenty-three billion, two hundred thirty-one million, one hundred twenty-three thousand, one".