12200735621 has 2 divisors, whose sum is σ = 12200735622. Its totient is φ = 12200735620.

The previous prime is 12200735581. The next prime is 12200735623. The reversal of 12200735621 is 12653700221.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10177984996 + 2022750625 = 100886^2 + 44975^2 .

It is an emirp because it is prime and its reverse (12653700221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12200735621 - 2⁶ = 12200735557 is a prime.

Together with 12200735623, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12200735623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6100367810 + 6100367811.

It is an arithmetic number, because the mean of its divisors is an integer number (6100367811).

Almost surely, 2^12200735621 is an apocalyptic number.

It is an amenable number.

12200735621 is a deficient number, since it is larger than the sum of its proper divisors (1).

12200735621 is an equidigital number, since it uses as much as digits as its factorization.

12200735621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 29.

The spelling of 12200735621 in words is "twelve billion, two hundred million, seven hundred thirty-five thousand, six hundred twenty-one".