2121001131300 has 144 divisors (see below), whose sum is σ = 6310972530240. Its totient is φ = 549584663040.

The previous prime is 2121001131299. The next prime is 2121001131317. The reversal of 2121001131300 is 31311001212.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2121001131300.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8276491 + ... + 8528909.

Almost surely, 2^{2121001131300} is an apocalyptic number.

2121001131300 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 2121001131300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3155486265120).

2121001131300 is an abundant number, since it is smaller than the sum of its proper divisors (4189971398940).

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

2121001131300 is a wasteful number, since it uses less digits than its factorization.

2121001131300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253230 (or 253223 counting only the distinct ones).

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

Adding to 2121001131300 its reverse (31311001212), we get a palindrome (2152312132512).

The spelling of 2121001131300 in words is "two trillion, one hundred twenty-one billion, one million, one hundred thirty-one thousand, three hundred".