12511145122 has 32 divisors (see below), whose sum is σ = 21604568832. Its totient is φ = 5322842304.

The previous prime is 12511145117. The next prime is 12511145131. The reversal of 12511145122 is 22154111521.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1073028 + ... + 1084624.

It is an arithmetic number, because the mean of its divisors is an integer number (675142776).

Almost surely, 2^12511145122 is an apocalyptic number.

12511145122 is a deficient number, since it is larger than the sum of its proper divisors (9093423710).

12511145122 is a wasteful number, since it uses less digits than its factorization.

12511145122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12162.

The product of its digits is 800, while the sum is 25.

Adding to 12511145122 its reverse (22154111521), we get a palindrome (34665256643).

The spelling of 12511145122 in words is "twelve billion, five hundred eleven million, one hundred forty-five thousand, one hundred twenty-two".