13522002123 has 12 divisors (see below), whose sum is σ = 20972901480. Its totient is φ = 7726858272.

The previous prime is 13522002119. The next prime is 13522002139. The reversal of 13522002123 is 32120022531.

It is not a de Polignac number, because 13522002123 - 2² = 13522002119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 13522002123.

It is not an unprimeable number, because it can be changed into a prime (13522002523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45993058 + ... + 45993351.

It is an arithmetic number, because the mean of its divisors is an integer number (1747741790).

Almost surely, 2^13522002123 is an apocalyptic number.

13522002123 is a deficient number, since it is larger than the sum of its proper divisors (7450899357).

13522002123 is an equidigital number, since it uses as much as digits as its factorization.

13522002123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91986426 (or 91986419 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 13522002123 its reverse (32120022531), we get a palindrome (45642024654).

The spelling of 13522002123 in words is "thirteen billion, five hundred twenty-two million, two thousand, one hundred twenty-three".