12204531261 has 48 divisors (see below), whose sum is σ = 19300619520. Its totient is φ = 7385938560.

The previous prime is 12204531253. The next prime is 12204531323. The reversal of 12204531261 is 16213540221.

12204531261 is a `hidden beast` number, since 122 + 0 + 4 + 531 + 2 + 6 + 1 = 666.

It is not a de Polignac number, because 12204531261 - 2³ = 12204531253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12204531461) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7140475 + ... + 7142183.

It is an arithmetic number, because the mean of its divisors is an integer number (402096240).

Almost surely, 2^12204531261 is an apocalyptic number.

It is an amenable number.

12204531261 is a deficient number, since it is larger than the sum of its proper divisors (7096088259).

12204531261 is a wasteful number, since it uses less digits than its factorization.

12204531261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2706 (or 2703 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The spelling of 12204531261 in words is "twelve billion, two hundred four million, five hundred thirty-one thousand, two hundred sixty-one".