12120101231 has 4 divisors (see below), whose sum is σ = 13851544272. Its totient is φ = 10388658192.

The previous prime is 12120101179. The next prime is 12120101249. The reversal of 12120101231 is 13210102121.

12120101231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12120101231 is a prime.

It is a super-2 number, since 2×12120101231² (a number of 21 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 (12120101251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 865721510 + ... + 865721523.

It is an arithmetic number, because the mean of its divisors is an integer number (3462886068).

Almost surely, 2^12120101231 is an apocalyptic number.

12120101231 is a deficient number, since it is larger than the sum of its proper divisors (1731443041).

12120101231 is an equidigital number, since it uses as much as digits as its factorization.

12120101231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1731443040.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 12120101231 its reverse (13210102121), we get a palindrome (25330203352).

The spelling of 12120101231 in words is "twelve billion, one hundred twenty million, one hundred one thousand, two hundred thirty-one".