12207021566650 has 24 divisors (see below), whose sum is σ = 23077274219964. Its totient is φ = 4802762582400.

The previous prime is 12207021566587. The next prime is 12207021566651. The reversal of 12207021566650 is 5666512070221.

It can be written as a sum of positive squares in 6 ways, for example, as 1230105028201 + 10976916538449 = 1109101^2 + 3313143^2 .

It is a super-2 number, since 2×12207021566650² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12207021566597 and 12207021566606.

It is not an unprimeable number, because it can be changed into a prime (12207021566651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2001148027 + ... + 2001154126.

Almost surely, 2^{12207021566650} is an apocalyptic number.

12207021566650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12207021566650 is a deficient number, since it is larger than the sum of its proper divisors (10870252653314).

12207021566650 is a wasteful number, since it uses less digits than its factorization.

12207021566650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4002302226 (or 4002302221 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 43.

The spelling of 12207021566650 in words is "twelve trillion, two hundred seven billion, twenty-one million, five hundred sixty-six thousand, six hundred fifty".