13207121420 has 48 divisors (see below), whose sum is σ = 28703475360. Its totient is φ = 5098523136.

The previous prime is 13207121377. The next prime is 13207121423. The reversal of 13207121420 is 2412170231.

It is not an unprimeable number, because it can be changed into a prime (13207121423) 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, 2405999 + ... + 2411481.

It is an arithmetic number, because the mean of its divisors is an integer number (597989070).

Almost surely, 2^13207121420 is an apocalyptic number.

13207121420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13207121420 is an abundant number, since it is smaller than the sum of its proper divisors (15496353940).

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

13207121420 is a wasteful number, since it uses less digits than its factorization.

13207121420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9674 (or 9672 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

Adding to 13207121420 its reverse (2412170231), we get a palindrome (15619291651).

The spelling of 13207121420 in words is "thirteen billion, two hundred seven million, one hundred twenty-one thousand, four hundred twenty".