12011203322231 has 4 divisors (see below), whose sum is σ = 12304159500864. Its totient is φ = 11718247143600.

The previous prime is 12011203322221. The next prime is 12011203322243. The reversal of 12011203322231 is 13222330211021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12011203322231 is a prime.

It is a super-2 number, since 2×12011203322231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12011203322197 and 12011203322206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011203322221) 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 3 ways as a sum of consecutive naturals, for example, 146478089255 + ... + 146478089336.

It is an arithmetic number, because the mean of its divisors is an integer number (3076039875216).

Almost surely, 2^{12011203322231} is an apocalyptic number.

12011203322231 is a deficient number, since it is larger than the sum of its proper divisors (292956178633).

12011203322231 is an equidigital number, since it uses as much as digits as its factorization.

12011203322231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292956178632.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 12011203322231 its reverse (13222330211021), we get a palindrome (25233533533252).

The spelling of 12011203322231 in words is "twelve trillion, eleven billion, two hundred three million, three hundred twenty-two thousand, two hundred thirty-one".