12200111231 has 16 divisors (see below), whose sum is σ = 15564265728. Its totient is φ = 9285494400.

The previous prime is 12200111221. The next prime is 12200111233. The reversal of 12200111231 is 13211100221.

It is not a de Polignac number, because 12200111231 - 2²² = 12195916927 is a prime.

It is a super-2 number, since 2×12200111231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12200111233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1839050 + ... + 1845671.

It is an arithmetic number, because the mean of its divisors is an integer number (972766608).

Almost surely, 2^12200111231 is an apocalyptic number.

12200111231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12200111231 is a deficient number, since it is larger than the sum of its proper divisors (3364154497).

12200111231 is a wasteful number, since it uses less digits than its factorization.

12200111231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3684782.

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

Adding to 12200111231 its reverse (13211100221), we get a palindrome (25411211452).

The spelling of 12200111231 in words is "twelve billion, two hundred million, one hundred eleven thousand, two hundred thirty-one".