13303121004 has 18 divisors (see below), whose sum is σ = 33627333740. Its totient is φ = 4434373656.

The previous prime is 13303121003. The next prime is 13303121017. The reversal of 13303121004 is 40012130331.

It is a tau number, because it is divible by the number of its divisors (18).

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

It is not an unprimeable number, because it can be changed into a prime (13303121003) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 184765534 + ... + 184765605.

Almost surely, 2^13303121004 is an apocalyptic number.

It is an amenable number.

13303121004 is an abundant number, since it is smaller than the sum of its proper divisors (20324212736).

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

13303121004 is a wasteful number, since it uses less digits than its factorization.

13303121004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369531149 (or 369531144 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 13303121004 its reverse (40012130331), we get a palindrome (53315251335).

The spelling of 13303121004 in words is "thirteen billion, three hundred three million, one hundred twenty-one thousand, four".