13145122112 has 14 divisors (see below), whose sum is σ = 26084851818. Its totient is φ = 6572561024.

The previous prime is 13145122091. The next prime is 13145122121. The reversal of 13145122112 is 21122154131.

It can be written as a sum of positive squares in only one way, i.e., 11771382016 + 1373740096 = 108496^2 + 37064^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102696203 + ... + 102696330.

Almost surely, 2^13145122112 is an apocalyptic number.

It is an amenable number.

13145122112 is a deficient number, since it is larger than the sum of its proper divisors (12939729706).

13145122112 is an equidigital number, since it uses as much as digits as its factorization.

13145122112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205392545 (or 205392535 counting only the distinct ones).

The product of its digits is 480, while the sum is 23.

Adding to 13145122112 its reverse (21122154131), we get a palindrome (34267276243).

The spelling of 13145122112 in words is "thirteen billion, one hundred forty-five million, one hundred twenty-two thousand, one hundred twelve".