12101571 has 12 divisors (see below), whose sum is σ = 17510272. Its totient is φ = 8053776.

The previous prime is 12101567. The next prime is 12101587. The reversal of 12101571 is 17510121.

It is a happy number.

12101571 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12101571 - 2² = 12101567 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12101591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9165 + ... + 10401.

Almost surely, 2^12101571 is an apocalyptic number.

12101571 is a deficient number, since it is larger than the sum of its proper divisors (5408701).

12101571 is a wasteful number, since it uses less digits than its factorization.

12101571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2330 (or 2327 counting only the distinct ones).

The product of its (nonzero) digits is 70, while the sum is 18.

The square root of 12101571 is about 3478.7312342289. The cubic root of 12101571 is about 229.5869777262.

Adding to 12101571 its reverse (17510121), we get a palindrome (29611692).

The spelling of 12101571 in words is "twelve million, one hundred one thousand, five hundred seventy-one".