1232120232011 has 4 divisors (see below), whose sum is σ = 1232385608232. Its totient is φ = 1231854855792.

The previous prime is 1232120231981. The next prime is 1232120232023. The reversal of 1232120232011 is 1102320212321.

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 1232120232011 - 2¹⁸ = 1232119969867 is a prime.

It is a super-2 number, since 2×1232120232011² (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 (1232120232041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132681146 + ... + 132690431.

It is an arithmetic number, because the mean of its divisors is an integer number (308096402058).

Almost surely, 2^{1232120232011} is an apocalyptic number.

1232120232011 is a deficient number, since it is larger than the sum of its proper divisors (265376221).

1232120232011 is an equidigital number, since it uses as much as digits as its factorization.

1232120232011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265376220.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1232120232011 its reverse (1102320212321), we get a palindrome (2334440444332).

The spelling of 1232120232011 in words is "one trillion, two hundred thirty-two billion, one hundred twenty million, two hundred thirty-two thousand, eleven".