12211241587 has 4 divisors (see below), whose sum is σ = 12217986216. Its totient is φ = 12204496960.

The previous prime is 12211241561. The next prime is 12211241591. The reversal of 12211241587 is 78514211221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12211241587 - 2⁷ = 12211241459 is a prime.

It is a super-2 number, since 2×12211241587² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12211245587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3369598 + ... + 3373219.

It is an arithmetic number, because the mean of its divisors is an integer number (3054496554).

Almost surely, 2^12211241587 is an apocalyptic number.

12211241587 is a deficient number, since it is larger than the sum of its proper divisors (6744629).

12211241587 is an equidigital number, since it uses as much as digits as its factorization.

12211241587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6744628.

The product of its digits is 8960, while the sum is 34.

The spelling of 12211241587 in words is "twelve billion, two hundred eleven million, two hundred forty-one thousand, five hundred eighty-seven".