2123541200000 has 384 divisors, whose sum is σ = 5820894938880. Its totient is φ = 765184000000.

The previous prime is 2123541199999. The next prime is 2123541200089. The reversal of 2123541200000 is 21453212.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 497197865 + ... + 497202135.

It is an arithmetic number, because the mean of its divisors is an integer number (15158580570).

Almost surely, 2^{2123541200000} is an apocalyptic number.

2123541200000 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 2123541200000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2910447469440).

2123541200000 is an abundant number, since it is smaller than the sum of its proper divisors (3697353738880).

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

2123541200000 is an equidigital number, since it uses as much as digits as its factorization.

2123541200000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4434 (or 4402 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 2123541200000 its reverse (21453212), we get a palindrome (2123562653212).

The spelling of 2123541200000 in words is "two trillion, one hundred twenty-three billion, five hundred forty-one million, two hundred thousand".