13121432414420 has 96 divisors (see below), whose sum is σ = 30361040027136. Its totient is φ = 4723657856000.

The previous prime is 13121432414413. The next prime is 13121432414443. The reversal of 13121432414420 is 2441423412131.

13121432414420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 235659704 + ... + 235715376.

It is an arithmetic number, because the mean of its divisors is an integer number (316260833616).

Almost surely, 2^{13121432414420} is an apocalyptic number.

13121432414420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13121432414420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15180520013568).

13121432414420 is an abundant number, since it is smaller than the sum of its proper divisors (17239607612716).

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

13121432414420 is a wasteful number, since it uses less digits than its factorization.

13121432414420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66401 (or 66399 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

Adding to 13121432414420 its reverse (2441423412131), we get a palindrome (15562855826551).

The spelling of 13121432414420 in words is "thirteen trillion, one hundred twenty-one billion, four hundred thirty-two million, four hundred fourteen thousand, four hundred twenty".