12512151111 has 16 divisors (see below), whose sum is σ = 17569731200. Its totient is φ = 7898443488.

The previous prime is 12512151109. The next prime is 12512151143. The reversal of 12512151111 is 11115121521.

It is not a de Polignac number, because 12512151111 - 2¹ = 12512151109 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 (12512151101) 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, 61560 + ... + 169746.

It is an arithmetic number, because the mean of its divisors is an integer number (1098108200).

Almost surely, 2^12512151111 is an apocalyptic number.

12512151111 is a deficient number, since it is larger than the sum of its proper divisors (5057580089).

12512151111 is a wasteful number, since it uses less digits than its factorization.

12512151111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110238.

The product of its digits is 100, while the sum is 21.

Adding to 12512151111 its reverse (11115121521), we get a palindrome (23627272632).

The spelling of 12512151111 in words is "twelve billion, five hundred twelve million, one hundred fifty-one thousand, one hundred eleven".