12151210171 has 4 divisors (see below), whose sum is σ = 12152447344. Its totient is φ = 12149973000.

The previous prime is 12151210147. The next prime is 12151210199. The reversal of 12151210171 is 17101215121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17101215121 = 9901 ⋅1727221.

It is a cyclic number.

It is not a de Polignac number, because 12151210171 - 2¹¹ = 12151208123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12151210121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 603735 + ... + 623536.

It is an arithmetic number, because the mean of its divisors is an integer number (3038111836).

Almost surely, 2^12151210171 is an apocalyptic number.

12151210171 is a deficient number, since it is larger than the sum of its proper divisors (1237173).

12151210171 is an equidigital number, since it uses as much as digits as its factorization.

12151210171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1237172.

The product of its (nonzero) digits is 140, while the sum is 22.

Multiplying 12151210171 by its sum of digits (22), we get a palindrome (267326623762).

Adding to 12151210171 its reverse (17101215121), we get a palindrome (29252425292).

The spelling of 12151210171 in words is "twelve billion, one hundred fifty-one million, two hundred ten thousand, one hundred seventy-one".