12001121312231 has 8 divisors (see below), whose sum is σ = 12015723374928. Its totient is φ = 11986523176000.

The previous prime is 12001121312207. The next prime is 12001121312261. The reversal of 12001121312231 is 13221312110021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12001121312231 is a prime.

It is a super-2 number, since 2×12001121312231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001121312261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5158376 + ... + 7114146.

It is an arithmetic number, because the mean of its divisors is an integer number (1501965421866).

Almost surely, 2^{12001121312231} is an apocalyptic number.

12001121312231 is a deficient number, since it is larger than the sum of its proper divisors (14602062697).

12001121312231 is an equidigital number, since it uses as much as digits as its factorization.

12001121312231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1963233.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 12001121312231 its reverse (13221312110021), we get a palindrome (25222433422252).

The spelling of 12001121312231 in words is "twelve trillion, one billion, one hundred twenty-one million, three hundred twelve thousand, two hundred thirty-one".