13120124200020 has 72 divisors (see below), whose sum is σ = 39802172078760. Its totient is φ = 3498307522560.

The previous prime is 13120124199907. The next prime is 13120124200063. The reversal of 13120124200020 is 2000242102131.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 993139806096 + 12126984393924 = 996564^2 + 3482382^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 13120124199966 and 13120124200002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2474401 + ... + 5688840.

Almost surely, 2^{13120124200020} is an apocalyptic number.

13120124200020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13120124200020 is an abundant number, since it is smaller than the sum of its proper divisors (26682047878740).

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

13120124200020 is a wasteful number, since it uses less digits than its factorization.

13120124200020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8172185 (or 8172180 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 13120124200020 its reverse (2000242102131), we get a palindrome (15120366302151).

The spelling of 13120124200020 in words is "thirteen trillion, one hundred twenty billion, one hundred twenty-four million, two hundred thousand, twenty".