12201222231 has 96 divisors (see below), whose sum is σ = 20357415936. Its totient is φ = 6975072000.

The previous prime is 12201222199. The next prime is 12201222247. The reversal of 12201222231 is 13222210221.

12201222231 is a `hidden beast` number, since 12 + 201 + 222 + 231 = 666.

It is not a de Polignac number, because 12201222231 - 2⁵ = 12201222199 is a prime.

It is a super-2 number, since 2×12201222231² (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 (12201222731) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 22552821 + ... + 22553361.

It is an arithmetic number, because the mean of its divisors is an integer number (212056416).

Almost surely, 2^12201222231 is an apocalyptic number.

12201222231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12201222231 is a deficient number, since it is larger than the sum of its proper divisors (8156193705).

12201222231 is a wasteful number, since it uses less digits than its factorization.

12201222231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773 (or 770 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 12201222231 its reverse (13222210221), we get a palindrome (25423432452).

It can be divided in two parts, 12201 and 222231, that added together give a palindrome (234432).

The spelling of 12201222231 in words is "twelve billion, two hundred one million, two hundred twenty-two thousand, two hundred thirty-one".