12225211145 has 64 divisors (see below), whose sum is σ = 17772480000. Its totient is φ = 8059984128.

The previous prime is 12225211111. The next prime is 12225211169. The reversal of 12225211145 is 54111252221.

It is a happy number.

It is not a de Polignac number, because 12225211145 - 2¹⁰ = 12225210121 is a prime.

It is a super-2 number, since 2×12225211145² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 18550826 + ... + 18551484.

It is an arithmetic number, because the mean of its divisors is an integer number (277695000).

Almost surely, 2^12225211145 is an apocalyptic number.

It is an amenable number.

12225211145 is a deficient number, since it is larger than the sum of its proper divisors (5547268855).

12225211145 is an equidigital number, since it uses as much as digits as its factorization.

12225211145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1087 (or 1073 counting only the distinct ones).

The product of its digits is 1600, while the sum is 26.

Adding to 12225211145 its reverse (54111252221), we get a palindrome (66336463366).

The spelling of 12225211145 in words is "twelve billion, two hundred twenty-five million, two hundred eleven thousand, one hundred forty-five".