13120421334 has 32 divisors (see below), whose sum is σ = 27047474016. Its totient is φ = 4239889920.

The previous prime is 13120421317. The next prime is 13120421339. The reversal of 13120421334 is 43312402131.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13120421339) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45187 + ... + 168174.

It is an arithmetic number, because the mean of its divisors is an integer number (845233563).

Almost surely, 2^13120421334 is an apocalyptic number.

13120421334 is an abundant number, since it is smaller than the sum of its proper divisors (13927052682).

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

13120421334 is a wasteful number, since it uses less digits than its factorization.

13120421334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213680.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 13120421334 its reverse (43312402131), we get a palindrome (56432823465).

The spelling of 13120421334 in words is "thirteen billion, one hundred twenty million, four hundred twenty-one thousand, three hundred thirty-four".