13121322121120 has 48 divisors (see below), whose sum is σ = 31999095249408. Its totient is φ = 5079221464320.

The previous prime is 13121322121099. The next prime is 13121322121133. The reversal of 13121322121120 is 2112122312131.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 13121322121091 and 13121322121100.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1322708964 + ... + 1322718883.

It is an arithmetic number, because the mean of its divisors is an integer number (666647817696).

Almost surely, 2^{13121322121120} is an apocalyptic number.

13121322121120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13121322121120 is an abundant number, since it is smaller than the sum of its proper divisors (18877773128288).

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

13121322121120 is a wasteful number, since it uses less digits than its factorization.

13121322121120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2645427893 (or 2645427885 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 13121322121120 its reverse (2112122312131), we get a palindrome (15233444433251).

The spelling of 13121322121120 in words is "thirteen trillion, one hundred twenty-one billion, three hundred twenty-two million, one hundred twenty-one thousand, one hundred twenty".