12050522231221 has 8 divisors (see below), whose sum is σ = 12459273852600. Its totient is φ = 11646142285248.

The previous prime is 12050522231207. The next prime is 12050522231257. The reversal of 12050522231221 is 12213222505021.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2113211708721 + 9937310522500 = 1453689^2 + 3152350^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12050522231221 - 2⁹ = 12050522230709 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12050522231221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12050522231281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1092913246 + ... + 1092924271.

It is an arithmetic number, because the mean of its divisors is an integer number (1557409231575).

Almost surely, 2^{12050522231221} is an apocalyptic number.

It is an amenable number.

12050522231221 is a deficient number, since it is larger than the sum of its proper divisors (408751621379).

12050522231221 is a wasteful number, since it uses less digits than its factorization.

12050522231221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2185837703.

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 12050522231221 its reverse (12213222505021), we get a palindrome (24263744736242).

The spelling of 12050522231221 in words is "twelve trillion, fifty billion, five hundred twenty-two million, two hundred thirty-one thousand, two hundred twenty-one".