12221241057 has 12 divisors (see below), whose sum is σ = 17761205904. Its totient is φ = 8097508440.

The previous prime is 12221241031. The next prime is 12221241077. The reversal of 12221241057 is 75014212221.

It is a happy number.

12221241057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12221241057 - 2²⁷ = 12087023329 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12221241057.

It is not an unprimeable number, because it can be changed into a prime (12221241077) 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 11 ways as a sum of consecutive naturals, for example, 4163919 + ... + 4166852.

It is an arithmetic number, because the mean of its divisors is an integer number (1480100492).

Almost surely, 2^12221241057 is an apocalyptic number.

It is an amenable number.

12221241057 is a deficient number, since it is larger than the sum of its proper divisors (5539964847).

12221241057 is a wasteful number, since it uses less digits than its factorization.

12221241057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8330940 (or 8330937 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

Adding to 12221241057 its reverse (75014212221), we get a palindrome (87235453278).

The spelling of 12221241057 in words is "twelve billion, two hundred twenty-one million, two hundred forty-one thousand, fifty-seven".