12101601571 has 4 divisors (see below), whose sum is σ = 12299988544. Its totient is φ = 11903214600.

The previous prime is 12101601559. The next prime is 12101601641. The reversal of 12101601571 is 17510610121.

12101601571 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12101601571 - 2⁷ = 12101601443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12101601511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99193395 + ... + 99193516.

It is an arithmetic number, because the mean of its divisors is an integer number (3074997136).

Almost surely, 2^12101601571 is an apocalyptic number.

12101601571 is a deficient number, since it is larger than the sum of its proper divisors (198386973).

12101601571 is an equidigital number, since it uses as much as digits as its factorization.

12101601571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198386972.

The product of its (nonzero) digits is 420, while the sum is 25.

The spelling of 12101601571 in words is "twelve billion, one hundred one million, six hundred one thousand, five hundred seventy-one".