12261003611 has 2 divisors, whose sum is σ = 12261003612. Its totient is φ = 12261003610.

The previous prime is 12261003593. The next prime is 12261003683. The reversal of 12261003611 is 11630016221.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12261003611 is a prime.

It is not a weakly prime, because it can be changed into another prime (12261003011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6130501805 + 6130501806.

It is an arithmetic number, because the mean of its divisors is an integer number (6130501806).

Almost surely, 2^12261003611 is an apocalyptic number.

12261003611 is a deficient number, since it is larger than the sum of its proper divisors (1).

12261003611 is an equidigital number, since it uses as much as digits as its factorization.

12261003611 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 12261003611 its reverse (11630016221), we get a palindrome (23891019832).

The spelling of 12261003611 in words is "twelve billion, two hundred sixty-one million, three thousand, six hundred eleven".