12204545261 has 2 divisors, whose sum is σ = 12204545262. Its totient is φ = 12204545260.

The previous prime is 12204545257. The next prime is 12204545357. The reversal of 12204545261 is 16254540221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12159252361 + 45292900 = 110269^2 + 6730^2 .

It is a cyclic number.

It is not a de Polignac number, because 12204545261 - 2² = 12204545257 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12204545231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6102272630 + 6102272631.

It is an arithmetic number, because the mean of its divisors is an integer number (6102272631).

Almost surely, 2^12204545261 is an apocalyptic number.

It is an amenable number.

12204545261 is a deficient number, since it is larger than the sum of its proper divisors (1).

12204545261 is an equidigital number, since it uses as much as digits as its factorization.

12204545261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19200, while the sum is 32.

The spelling of 12204545261 in words is "twelve billion, two hundred four million, five hundred forty-five thousand, two hundred sixty-one".