13021123122 has 24 divisors (see below), whose sum is σ = 32242781376. Its totient is φ = 3720320856.

The previous prime is 13021123121. The next prime is 13021123169. The reversal of 13021123122 is 22132112031.

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 = 13021123095 and 13021123104.

It is not an unprimeable number, because it can be changed into a prime (13021123121) by changing a digit.

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 in 11 ways as a sum of consecutive naturals, for example, 51670998 + ... + 51671249.

It is an arithmetic number, because the mean of its divisors is an integer number (1343449224).

Almost surely, 2^13021123122 is an apocalyptic number.

13021123122 is an abundant number, since it is smaller than the sum of its proper divisors (19221658254).

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

13021123122 is a wasteful number, since it uses less digits than its factorization.

13021123122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103342262 (or 103342259 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 13021123122 its reverse (22132112031), we get a palindrome (35153235153).

The spelling of 13021123122 in words is "thirteen billion, twenty-one million, one hundred twenty-three thousand, one hundred twenty-two".