13520004513122 has 16 divisors (see below), whose sum is σ = 20578551032760. Its totient is φ = 6661096155648.

The previous prime is 13520004513083. The next prime is 13520004513137. The reversal of 13520004513122 is 22131540002531.

It can be written as a sum of positive squares in 4 ways, for example, as 12836735299921 + 683269213201 = 3582839^2 + 826601^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152118773 + ... + 152207624.

Almost surely, 2^{13520004513122} is an apocalyptic number.

13520004513122 is a deficient number, since it is larger than the sum of its proper divisors (7058546519638).

13520004513122 is a wasteful number, since it uses less digits than its factorization.

13520004513122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304326725.

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 13520004513122 its reverse (22131540002531), we get a palindrome (35651544515653).

The spelling of 13520004513122 in words is "thirteen trillion, five hundred twenty billion, four million, five hundred thirteen thousand, one hundred twenty-two".