12102009971 has 2 divisors, whose sum is σ = 12102009972. Its totient is φ = 12102009970.

The previous prime is 12102009949. The next prime is 12102010003. The reversal of 12102009971 is 17990020121.

It is an a-pointer prime, because the next prime (12102010003) can be obtained adding 12102009971 to its sum of digits (32).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12102009971 is a prime.

It is not a weakly prime, because it can be changed into another prime (12102009071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6051004985 + 6051004986.

It is an arithmetic number, because the mean of its divisors is an integer number (6051004986).

Almost surely, 2^12102009971 is an apocalyptic number.

12102009971 is a deficient number, since it is larger than the sum of its proper divisors (1).

12102009971 is an equidigital number, since it uses as much as digits as its factorization.

12102009971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 32.

The spelling of 12102009971 in words is "twelve billion, one hundred two million, nine thousand, nine hundred seventy-one".