12211400445 has 16 divisors (see below), whose sum is σ = 19580451072. Its totient is φ = 6498676800.

The previous prime is 12211400429. The next prime is 12211400449. The reversal of 12211400445 is 54400411221.

It is not a de Polignac number, because 12211400445 - 2⁴ = 12211400429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211400449) 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, 872206 + ... + 886095.

It is an arithmetic number, because the mean of its divisors is an integer number (1223778192).

Almost surely, 2^12211400445 is an apocalyptic number.

12211400445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12211400445 is a deficient number, since it is larger than the sum of its proper divisors (7369050627).

12211400445 is a wasteful number, since it uses less digits than its factorization.

12211400445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1758772.

The product of its (nonzero) digits is 1280, while the sum is 24.

Adding to 12211400445 its reverse (54400411221), we get a palindrome (66611811666).

The spelling of 12211400445 in words is "twelve billion, two hundred eleven million, four hundred thousand, four hundred forty-five".