21030003310100 has 72 divisors (see below), whose sum is σ = 45944617647936. Its totient is φ = 8354966400000.

The previous prime is 21030003310091. The next prime is 21030003310159. The reversal of 21030003310100 is 101330003012.

It is a super-2 number, since 2×21030003310100² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 97906820 + ... + 98121380.

Almost surely, 2^{21030003310100} is an apocalyptic number.

21030003310100 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 21030003310100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22972308823968).

21030003310100 is an abundant number, since it is smaller than the sum of its proper divisors (24914614337836).

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

21030003310100 is a wasteful number, since it uses less digits than its factorization.

21030003310100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221217 (or 221210 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 14.

Adding to 21030003310100 its reverse (101330003012), we get a palindrome (21131333313112).

The spelling of 21030003310100 in words is "twenty-one trillion, thirty billion, three million, three hundred ten thousand, one hundred".