2120023321500 has 192 divisors, whose sum is σ = 7070561971200. Its totient is φ = 483538003200.

The previous prime is 2120023321457. The next prime is 2120023321567. The reversal of 2120023321500 is 51233200212.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4687326 + ... + 5119674.

It is an arithmetic number, because the mean of its divisors is an integer number (36825843600).

Almost surely, 2^{2120023321500} is an apocalyptic number.

2120023321500 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 2120023321500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3535280985600).

2120023321500 is an abundant number, since it is smaller than the sum of its proper divisors (4950538649700).

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

2120023321500 is a wasteful number, since it uses less digits than its factorization.

2120023321500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432845 (or 432833 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 2120023321500 its reverse (51233200212), we get a palindrome (2171256521712).

The spelling of 2120023321500 in words is "two trillion, one hundred twenty billion, twenty-three million, three hundred twenty-one thousand, five hundred".