12201231023 has 4 divisors (see below), whose sum is σ = 12368371248. Its totient is φ = 12034090800.

The previous prime is 12201231019. The next prime is 12201231047. The reversal of 12201231023 is 32013210221.

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 12201231023 - 2² = 12201231019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12201230992 and 12201231010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12201231013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83570003 + ... + 83570148.

It is an arithmetic number, because the mean of its divisors is an integer number (3092092812).

Almost surely, 2^12201231023 is an apocalyptic number.

12201231023 is a deficient number, since it is larger than the sum of its proper divisors (167140225).

12201231023 is an equidigital number, since it uses as much as digits as its factorization.

12201231023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167140224.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 12201231023 its reverse (32013210221), we get a palindrome (44214441244).

The spelling of 12201231023 in words is "twelve billion, two hundred one million, two hundred thirty-one thousand, twenty-three".