12221131201231 has 4 divisors (see below), whose sum is σ = 12505343554792. Its totient is φ = 11936918847672.

The previous prime is 12221131201211. The next prime is 12221131201261. The reversal of 12221131201231 is 13210213112221.

It is a happy number.

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 12221131201231 - 2²³ = 12221122812623 is a prime.

It is a super-2 number, since 2×12221131201231² (a number of 27 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 (12221131201211) 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, 142106176716 + ... + 142106176801.

It is an arithmetic number, because the mean of its divisors is an integer number (3126335888698).

Almost surely, 2^{12221131201231} is an apocalyptic number.

12221131201231 is a deficient number, since it is larger than the sum of its proper divisors (284212353561).

12221131201231 is an equidigital number, since it uses as much as digits as its factorization.

12221131201231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284212353560.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 12221131201231 its reverse (13210213112221), we get a palindrome (25431344313452).

The spelling of 12221131201231 in words is "twelve trillion, two hundred twenty-one billion, one hundred thirty-one million, two hundred one thousand, two hundred thirty-one".