12120203312231 has 8 divisors (see below), whose sum is σ = 13875258311040. Its totient is φ = 10371047659128.

The previous prime is 12120203312179. The next prime is 12120203312257. The reversal of 12120203312231 is 13221330202121.

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-12120203312231 is a prime.

It is a super-2 number, since 2×12120203312231² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12120203312197 and 12120203312206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12120203314231) 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, 1474832021 + ... + 1474840238.

It is an arithmetic number, because the mean of its divisors is an integer number (1734407288880).

Almost surely, 2^{12120203312231} is an apocalyptic number.

12120203312231 is a deficient number, since it is larger than the sum of its proper divisors (1755054998809).

12120203312231 is an equidigital number, since it uses as much as digits as its factorization.

12120203312231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2949672853.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 12120203312231 its reverse (13221330202121), we get a palindrome (25341533514352).

The spelling of 12120203312231 in words is "twelve trillion, one hundred twenty billion, two hundred three million, three hundred twelve thousand, two hundred thirty-one".