12100221047 has 2 divisors, whose sum is σ = 12100221048. Its totient is φ = 12100221046.

The previous prime is 12100221043. The next prime is 12100221061. The reversal of 12100221047 is 74012200121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12100221047 - 2² = 12100221043 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12100221043) 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 as a sum of consecutive naturals, namely, 6050110523 + 6050110524.

It is an arithmetic number, because the mean of its divisors is an integer number (6050110524).

Almost surely, 2^12100221047 is an apocalyptic number.

12100221047 is a deficient number, since it is larger than the sum of its proper divisors (1).

12100221047 is an equidigital number, since it uses as much as digits as its factorization.

12100221047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 20.

Adding to 12100221047 its reverse (74012200121), we get a palindrome (86112421168).

The spelling of 12100221047 in words is "twelve billion, one hundred million, two hundred twenty-one thousand, forty-seven".