2520203221200 has 360 divisors, whose sum is σ = 9885372935520. Its totient is φ = 545727974400.

The previous prime is 2520203221187. The next prime is 2520203221223. The reversal of 2520203221200 is 21223020252.

It is a super-2 number, since 2×2520203221200² (a number of 26 digits) contains 22 as substring.

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 pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 10711 + ... + 2245110.

Almost surely, 2^{2520203221200} is an apocalyptic number.

2520203221200 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 2520203221200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4942686467760).

2520203221200 is an abundant number, since it is smaller than the sum of its proper divisors (7365169714320).

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

2520203221200 is a wasteful number, since it uses less digits than its factorization.

2520203221200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2255875 (or 2255857 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

Adding to 2520203221200 its reverse (21223020252), we get a palindrome (2541426241452).

The spelling of 2520203221200 in words is "two trillion, five hundred twenty billion, two hundred three million, two hundred twenty-one thousand, two hundred".