13001310121220 has 12 divisors (see below), whose sum is σ = 27302751254604. Its totient is φ = 5200524048480.

The previous prime is 13001310121213. The next prime is 13001310121301. The reversal of 13001310121220 is 2212101310031.

It can be written as a sum of positive squares in 2 ways, for example, as 9555616358656 + 3445693762564 = 3091216^2 + 1856258^2 .

It is a super-2 number, since 2×13001310121220² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 325032753011 + ... + 325032753050.

It is an arithmetic number, because the mean of its divisors is an integer number (2275229271217).

Almost surely, 2^{13001310121220} is an apocalyptic number.

13001310121220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13001310121220 is an abundant number, since it is smaller than the sum of its proper divisors (14301441133384).

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

13001310121220 is a wasteful number, since it uses less digits than its factorization.

13001310121220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650065506070 (or 650065506068 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 13001310121220 its reverse (2212101310031), we get a palindrome (15213411431251).

The spelling of 13001310121220 in words is "thirteen trillion, one billion, three hundred ten million, one hundred twenty-one thousand, two hundred twenty".