12151331121 has 16 divisors (see below), whose sum is σ = 16274805120. Its totient is φ = 8064451200.

The previous prime is 12151331119. The next prime is 12151331141. The reversal of 12151331121 is 12113315121.

It is not a de Polignac number, because 12151331121 - 2¹ = 12151331119 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12151331141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 637891 + ... + 656663.

It is an arithmetic number, because the mean of its divisors is an integer number (1017175320).

Almost surely, 2^12151331121 is an apocalyptic number.

It is an amenable number.

12151331121 is a deficient number, since it is larger than the sum of its proper divisors (4123473999).

12151331121 is a wasteful number, since it uses less digits than its factorization.

12151331121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19736.

The product of its digits is 180, while the sum is 21.

Adding to 12151331121 its reverse (12113315121), we get a palindrome (24264646242).

The spelling of 12151331121 in words is "twelve billion, one hundred fifty-one million, three hundred thirty-one thousand, one hundred twenty-one".