1231121133033 has 32 divisors (see below), whose sum is σ = 1889344051200. Its totient is φ = 705223598400.

The previous prime is 1231121133031. The next prime is 1231121133079. The reversal of 1231121133033 is 3303311211321.

It is not a de Polignac number, because 1231121133033 - 2¹ = 1231121133031 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1231121132994 and 1231121133012.

It is not an unprimeable number, because it can be changed into a prime (1231121133031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2007618 + ... + 2548091.

It is an arithmetic number, because the mean of its divisors is an integer number (59042001600).

Almost surely, 2^{1231121133033} is an apocalyptic number.

It is an amenable number.

1231121133033 is a deficient number, since it is larger than the sum of its proper divisors (658222918167).

1231121133033 is a wasteful number, since it uses less digits than its factorization.

1231121133033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4556173.

The product of its (nonzero) digits is 972, while the sum is 24.

Adding to 1231121133033 its reverse (3303311211321), we get a palindrome (4534432344354).

The spelling of 1231121133033 in words is "one trillion, two hundred thirty-one billion, one hundred twenty-one million, one hundred thirty-three thousand, thirty-three".