12032230031221 has 4 divisors (see below), whose sum is σ = 12083870503692. Its totient is φ = 11980589558752.

The previous prime is 12032230031209. The next prime is 12032230031231. The reversal of 12032230031221 is 12213003223021.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2553559256196 + 9478670775025 = 1597986^2 + 3078745^2 .

It is a cyclic number.

It is not a de Polignac number, because 12032230031221 - 2²³ = 12032221642613 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12032230031192 and 12032230031201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12032230031201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25820235886 + ... + 25820236351.

It is an arithmetic number, because the mean of its divisors is an integer number (3020967625923).

Almost surely, 2^{12032230031221} is an apocalyptic number.

It is an amenable number.

12032230031221 is a deficient number, since it is larger than the sum of its proper divisors (51640472471).

12032230031221 is an equidigital number, since it uses as much as digits as its factorization.

12032230031221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51640472470.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 12032230031221 its reverse (12213003223021), we get a palindrome (24245233254242).

The spelling of 12032230031221 in words is "twelve trillion, thirty-two billion, two hundred thirty million, thirty-one thousand, two hundred twenty-one".