12211566626 has 16 divisors (see below), whose sum is σ = 20971711296. Its totient is φ = 5224129296.

The previous prime is 12211566611. The next prime is 12211566629. The reversal of 12211566626 is 62666511221.

It is a super-2 number, since 2×12211566626² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12211566626.

It is not an unprimeable number, because it can be changed into a prime (12211566629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 775196 + ... + 790791.

It is an arithmetic number, because the mean of its divisors is an integer number (1310731956).

Almost surely, 2^12211566626 is an apocalyptic number.

12211566626 is a deficient number, since it is larger than the sum of its proper divisors (8760144670).

12211566626 is a wasteful number, since it uses less digits than its factorization.

12211566626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1566553.

The product of its digits is 51840, while the sum is 38.

The spelling of 12211566626 in words is "twelve billion, two hundred eleven million, five hundred sixty-six thousand, six hundred twenty-six".