12221300443 has 12 divisors (see below), whose sum is σ = 13719152160. Its totient is φ = 10873879280.

The previous prime is 12221300411. The next prime is 12221300461. The reversal of 12221300443 is 34400312221.

It is not a de Polignac number, because 12221300443 - 2⁵ = 12221300411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12221300473) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1068808 + ... + 1080181.

It is an arithmetic number, because the mean of its divisors is an integer number (1143262680).

Almost surely, 2^12221300443 is an apocalyptic number.

12221300443 is a deficient number, since it is larger than the sum of its proper divisors (1497851717).

12221300443 is a wasteful number, since it uses less digits than its factorization.

12221300443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2149058 (or 2149047 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 12221300443 its reverse (34400312221), we get a palindrome (46621612664).

The spelling of 12221300443 in words is "twelve billion, two hundred twenty-one million, three hundred thousand, four hundred forty-three".