2121300220000 has 240 divisors, whose sum is σ = 5915967971760. Its totient is φ = 742023936000.

The previous prime is 2121300219967. The next prime is 2121300220043. The reversal of 2121300220000 is 220031212.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4725294 + ... + 5154706.

It is an arithmetic number, because the mean of its divisors is an integer number (24649866549).

Almost surely, 2^{2121300220000} is an apocalyptic number.

2121300220000 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 2121300220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2957983985880).

2121300220000 is an abundant number, since it is smaller than the sum of its proper divisors (3794667751760).

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

2121300220000 is a wasteful number, since it uses less digits than its factorization.

2121300220000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429475 (or 429452 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 2121300220000 its reverse (220031212), we get a palindrome (2121520251212).

The spelling of 2121300220000 in words is "two trillion, one hundred twenty-one billion, three hundred million, two hundred twenty thousand".