13121296000 has 128 divisors (see below), whose sum is σ = 32844913920. Its totient is φ = 5212800000.

The previous prime is 13121295991. The next prime is 13121296009. The reversal of 13121296000 is 69212131.

It is an interprime number because it is at equal distance from previous prime (13121295991) and next prime (13121296009).

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (13121296009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2413285 + ... + 2418715.

It is an arithmetic number, because the mean of its divisors is an integer number (256600890).

Almost surely, 2^13121296000 is an apocalyptic number.

13121296000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13121296000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16422456960).

13121296000 is an abundant number, since it is smaller than the sum of its proper divisors (19723617920).

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

13121296000 is an equidigital number, since it uses as much as digits as its factorization.

13121296000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5611 (or 5589 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 25.

The spelling of 13121296000 in words is "thirteen billion, one hundred twenty-one million, two hundred ninety-six thousand".