12165222151 has 16 divisors (see below), whose sum is σ = 13754845440. Its totient is φ = 10698186240.

The previous prime is 12165222143. The next prime is 12165222161. The reversal of 12165222151 is 15122256121.

12165222151 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12165222151 - 2³ = 12165222143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12165222161) 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 15 ways as a sum of consecutive naturals, for example, 382716 + ... + 413281.

It is an arithmetic number, because the mean of its divisors is an integer number (859677840).

Almost surely, 2^12165222151 is an apocalyptic number.

12165222151 is a deficient number, since it is larger than the sum of its proper divisors (1589623289).

12165222151 is a wasteful number, since it uses less digits than its factorization.

12165222151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796074.

The product of its digits is 2400, while the sum is 28.

Adding to 12165222151 its reverse (15122256121), we get a palindrome (27287478272).

The spelling of 12165222151 in words is "twelve billion, one hundred sixty-five million, two hundred twenty-two thousand, one hundred fifty-one".