13120203321240 has 64 divisors (see below), whose sum is σ = 39417572021760. Its totient is φ = 3493657591680.

The previous prime is 13120203321229. The next prime is 13120203321259. The reversal of 13120203321240 is 4212330202131.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 13120203321240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79030704 + ... + 79196543.

It is an arithmetic number, because the mean of its divisors is an integer number (615899562840).

Almost surely, 2^{13120203321240} is an apocalyptic number.

13120203321240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13120203321240 is an abundant number, since it is smaller than the sum of its proper divisors (26297368700520).

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

13120203321240 is a wasteful number, since it uses less digits than its factorization.

13120203321240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158227952 (or 158227948 counting only the distinct ones).

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

Adding to 13120203321240 its reverse (4212330202131), we get a palindrome (17332533523371).

The spelling of 13120203321240 in words is "thirteen trillion, one hundred twenty billion, two hundred three million, three hundred twenty-one thousand, two hundred forty".