12001101971 has 2 divisors, whose sum is σ = 12001101972. Its totient is φ = 12001101970.

The previous prime is 12001101947. The next prime is 12001102007. The reversal of 12001101971 is 17910110021.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12001101971 is a prime.

It is not a weakly prime, because it can be changed into another prime (12001101901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6000550985 + 6000550986.

It is an arithmetic number, because the mean of its divisors is an integer number (6000550986).

Almost surely, 2^12001101971 is an apocalyptic number.

12001101971 is a deficient number, since it is larger than the sum of its proper divisors (1).

12001101971 is an equidigital number, since it uses as much as digits as its factorization.

12001101971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 126, while the sum is 23.

Adding to 12001101971 its reverse (17910110021), we get a palindrome (29911211992).

The spelling of 12001101971 in words is "twelve billion, one million, one hundred one thousand, nine hundred seventy-one".