12201233231 has 4 divisors (see below), whose sum is σ = 13310436264. Its totient is φ = 11092030200.

The previous prime is 12201233221. The next prime is 12201233263. The reversal of 12201233231 is 13233210221.

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 12201233231 - 2²⁶ = 12134124367 is a prime.

It is a super-2 number, since 2×12201233231² (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 (12201233201) 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, 554601500 + ... + 554601521.

It is an arithmetic number, because the mean of its divisors is an integer number (3327609066).

Almost surely, 2^12201233231 is an apocalyptic number.

12201233231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12201233231 is a deficient number, since it is larger than the sum of its proper divisors (1109203033).

12201233231 is a wasteful number, since it uses less digits than its factorization.

12201233231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1109203032.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 12201233231 its reverse (13233210221), we get a palindrome (25434443452).

The spelling of 12201233231 in words is "twelve billion, two hundred one million, two hundred thirty-three thousand, two hundred thirty-one".