12201180761 has 24 divisors (see below), whose sum is σ = 15490230624. Its totient is φ = 9503282880.

The previous prime is 12201180751. The next prime is 12201180853. The reversal of 12201180761 is 16708110221.

It is a de Polignac number, because none of the positive numbers 2^k-12201180761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12201180751) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1976666 + ... + 1982828.

It is an arithmetic number, because the mean of its divisors is an integer number (645426276).

Almost surely, 2^12201180761 is an apocalyptic number.

12201180761 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12201180761 is a deficient number, since it is larger than the sum of its proper divisors (3289049863).

12201180761 is a wasteful number, since it uses less digits than its factorization.

12201180761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9861 (or 9854 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 29.

Adding to 12201180761 its reverse (16708110221), we get a palindrome (28909290982).

The spelling of 12201180761 in words is "twelve billion, two hundred one million, one hundred eighty thousand, seven hundred sixty-one".