12002222231 has 4 divisors (see below), whose sum is σ = 12002458200. Its totient is φ = 12001986264.

The previous prime is 12002222203. The next prime is 12002222237. The reversal of 12002222231 is 13222220021.

12002222231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12002222231 - 2²² = 11998027927 is a prime.

It is a super-2 number, since 2×12002222231² (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 (12002222237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6701 + ... + 155078.

It is an arithmetic number, because the mean of its divisors is an integer number (3000614550).

Almost surely, 2^12002222231 is an apocalyptic number.

12002222231 is a deficient number, since it is larger than the sum of its proper divisors (235969).

12002222231 is an equidigital number, since it uses as much as digits as its factorization.

12002222231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235968.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 12002222231 its reverse (13222220021), we get a palindrome (25224442252).

The spelling of 12002222231 in words is "twelve billion, two million, two hundred twenty-two thousand, two hundred thirty-one".