13126211516220 has 96 divisors (see below), whose sum is σ = 40115704882176. Its totient is φ = 3180437664000.

The previous prime is 13126211516149. The next prime is 13126211516329. The reversal of 13126211516220 is 2261511262131.

It is a Harshad number since it is a multiple of its sum of digits (33).

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, 3976324 + ... + 6485643.

It is an arithmetic number, because the mean of its divisors is an integer number (417871925856).

Almost surely, 2^{13126211516220} is an apocalyptic number.

13126211516220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13126211516220 is an abundant number, since it is smaller than the sum of its proper divisors (26989493365956).

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

13126211516220 is a wasteful number, since it uses less digits than its factorization.

13126211516220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10463891 (or 10463889 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

Adding to 13126211516220 its reverse (2261511262131), we get a palindrome (15387722778351).

The spelling of 13126211516220 in words is "thirteen trillion, one hundred twenty-six billion, two hundred eleven million, five hundred sixteen thousand, two hundred twenty".