1232011201123 has 4 divisors (see below), whose sum is σ = 1232142597000. Its totient is φ = 1231879805248.

The previous prime is 1232011201121. The next prime is 1232011201217. The reversal of 1232011201123 is 3211021102321.

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 1232011201123 - 2¹ = 1232011201121 is a prime.

It is a super-2 number, since 2×1232011201123² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1232011201123.

It is not an unprimeable number, because it can be changed into a prime (1232011201121) 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, 65683873 + ... + 65702626.

It is an arithmetic number, because the mean of its divisors is an integer number (308035649250).

Almost surely, 2^{1232011201123} is an apocalyptic number.

1232011201123 is a deficient number, since it is larger than the sum of its proper divisors (131395877).

1232011201123 is an equidigital number, since it uses as much as digits as its factorization.

1232011201123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131395876.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1232011201123 its reverse (3211021102321), we get a palindrome (4443032303444).

The spelling of 1232011201123 in words is "one trillion, two hundred thirty-two billion, eleven million, two hundred one thousand, one hundred twenty-three".