12221050311 has 16 divisors (see below), whose sum is σ = 18114220800. Its totient is φ = 8143334424.

The previous prime is 12221050297. The next prime is 12221050313. The reversal of 12221050311 is 11305012221.

It is not a de Polignac number, because 12221050311 - 2¹⁷ = 12220919239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221050313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55941 + ... + 166046.

It is an arithmetic number, because the mean of its divisors is an integer number (1132138800).

Almost surely, 2^12221050311 is an apocalyptic number.

12221050311 is a deficient number, since it is larger than the sum of its proper divisors (5893170489).

12221050311 is a wasteful number, since it uses less digits than its factorization.

12221050311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224035 (or 224029 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

Adding to 12221050311 its reverse (11305012221), we get a palindrome (23526062532).

The spelling of 12221050311 in words is "twelve billion, two hundred twenty-one million, fifty thousand, three hundred eleven".