13521010122 has 24 divisors (see below), whose sum is σ = 30087294276. Its totient is φ = 4385192256.

The previous prime is 13521010099. The next prime is 13521010177. The reversal of 13521010122 is 22101012531.

13521010122 is a `hidden beast` number, since 13 + 521 + 0 + 10 + 122 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 13442315481 + 78694641 = 115941^2 + 8871^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 13521010095 and 13521010104.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10150243 + ... + 10151574.

Almost surely, 2^13521010122 is an apocalyptic number.

13521010122 is an abundant number, since it is smaller than the sum of its proper divisors (16566284154).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13521010122 is a wasteful number, since it uses less digits than its factorization.

13521010122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20301862 (or 20301859 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

Adding to 13521010122 its reverse (22101012531), we get a palindrome (35622022653).

The spelling of 13521010122 in words is "thirteen billion, five hundred twenty-one million, ten thousand, one hundred twenty-two".