12001231011072 has 72 divisors (see below), whose sum is σ = 31944320664480. Its totient is φ = 3999966423040.

The previous prime is 12001231011059. The next prime is 12001231011073. The reversal of 12001231011072 is 27011013210021.

It is a super-2 number, since 2×12001231011072² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001231011073) 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, 6094822 + ... + 7819802.

It is an arithmetic number, because the mean of its divisors is an integer number (443671120340).

Almost surely, 2^{12001231011072} is an apocalyptic number.

12001231011072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12001231011072 is an abundant number, since it is smaller than the sum of its proper divisors (19943089653408).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12001231011072 is an equidigital number, since it uses as much as digits as its factorization.

12001231011072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1734059 (or 1734045 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 21.

Adding to 12001231011072 its reverse (27011013210021), we get a palindrome (39012244221093).

The spelling of 12001231011072 in words is "twelve trillion, one billion, two hundred thirty-one million, eleven thousand, seventy-two".