2113121013000 has 128 divisors (see below), whose sum is σ = 6594461752320. Its totient is φ = 563368665600.

The previous prime is 2113121012909. The next prime is 2113121013013. The reversal of 2113121013000 is 3101213112.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 13261804 + ... + 13420196.

It is an arithmetic number, because the mean of its divisors is an integer number (51519232440).

Almost surely, 2^{2113121013000} is an apocalyptic number.

2113121013000 is a gapful number since it is divisible by the number (20) 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 2113121013000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3297230876160).

2113121013000 is an abundant number, since it is smaller than the sum of its proper divisors (4481340739320).

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

2113121013000 is a wasteful number, since it uses less digits than its factorization.

2113121013000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162864 (or 162850 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 2113121013000 its reverse (3101213112), we get a palindrome (2116222226112).

The spelling of 2113121013000 in words is "two trillion, one hundred thirteen billion, one hundred twenty-one million, thirteen thousand".