21003020223000 has 256 divisors, whose sum is σ = 69017274892800. Its totient is φ = 5303031206400.

The previous prime is 21003020222993. The next prime is 21003020223037. The reversal of 21003020223000 is 32202030012.

It is a super-2 number, since 2×21003020223000² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 101755902 + ... + 101962098.

It is an arithmetic number, because the mean of its divisors is an integer number (269598730050).

Almost surely, 2^{21003020223000} is an apocalyptic number.

21003020223000 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 21003020223000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34508637446400).

21003020223000 is an abundant number, since it is smaller than the sum of its proper divisors (48014254669800).

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

21003020223000 is a wasteful number, since it uses less digits than its factorization.

21003020223000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208027 (or 208013 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 21003020223000 its reverse (32202030012), we get a palindrome (21035222253012).

The spelling of 21003020223000 in words is "twenty-one trillion, three billion, twenty million, two hundred twenty-three thousand".