12208788641 has 4 divisors (see below), whose sum is σ = 13952901312. Its totient is φ = 10464675972.

The previous prime is 12208788611. The next prime is 12208788643. The reversal of 12208788641 is 14688780221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14688780221 = 4861 ⋅3021761.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12208788641 is a prime.

It is a super-2 number, since 2×12208788641² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12208788643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 872056325 + ... + 872056338.

It is an arithmetic number, because the mean of its divisors is an integer number (3488225328).

Almost surely, 2^12208788641 is an apocalyptic number.

It is an amenable number.

12208788641 is a deficient number, since it is larger than the sum of its proper divisors (1744112671).

12208788641 is an equidigital number, since it uses as much as digits as its factorization.

12208788641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1744112670.

The product of its (nonzero) digits is 344064, while the sum is 47.

The spelling of 12208788641 in words is "twelve billion, two hundred eight million, seven hundred eighty-eight thousand, six hundred forty-one".