21003000201120 has 768 divisors, whose sum is σ = 78646558556160. Its totient is φ = 4610414592000.

The previous prime is 21003000201119. The next prime is 21003000201187. The reversal of 21003000201120 is 2110200030012.

It is a super-2 number, since 2×21003000201120² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 21003000201096 and 21003000201105.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 18938683126 + ... + 18938684234.

It is an arithmetic number, because the mean of its divisors is an integer number (102404373120).

Almost surely, 2^{21003000201120} is an apocalyptic number.

21003000201120 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 21003000201120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39323279278080).

21003000201120 is an abundant number, since it is smaller than the sum of its proper divisors (57643558355040).

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

21003000201120 is a wasteful number, since it uses less digits than its factorization.

21003000201120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2389 (or 2381 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 21003000201120 its reverse (2110200030012), we get a palindrome (23113200231132).

The spelling of 21003000201120 in words is "twenty-one trillion, three billion, two hundred one thousand, one hundred twenty".