13121210311320 has 64 divisors (see below), whose sum is σ = 41075093157120. Its totient is φ = 3346859441024.

The previous prime is 13121210311243. The next prime is 13121210311327. The reversal of 13121210311320 is 2311301212131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13121210311327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2377028094 + ... + 2377033613.

It is an arithmetic number, because the mean of its divisors is an integer number (641798330580).

Almost surely, 2^{13121210311320} is an apocalyptic number.

13121210311320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13121210311320 is an abundant number, since it is smaller than the sum of its proper divisors (27953882845800).

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

13121210311320 is a wasteful number, since it uses less digits than its factorization.

13121210311320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4754061744 (or 4754061740 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 13121210311320 its reverse (2311301212131), we get a palindrome (15432511523451).

The spelling of 13121210311320 in words is "thirteen trillion, one hundred twenty-one billion, two hundred ten million, three hundred eleven thousand, three hundred twenty".