21030100331100 has 144 divisors (see below), whose sum is σ = 69828079216896. Its totient is φ = 4786934400000.

The previous prime is 21030100331041. The next prime is 21030100331111. The reversal of 21030100331100 is 113300103012.

It is a super-2 number, since 2×21030100331100² (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 self number, because there is not a number n which added to its sum of digits gives 21030100331100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20270526 + ... + 21282725.

It is an arithmetic number, because the mean of its divisors is an integer number (484917216784).

Almost surely, 2^{21030100331100} is an apocalyptic number.

21030100331100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21030100331100 is an abundant number, since it is smaller than the sum of its proper divisors (48797978885796).

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

21030100331100 is a wasteful number, since it uses less digits than its factorization.

21030100331100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41553516 (or 41553509 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 21030100331100 its reverse (113300103012), we get a palindrome (21143400434112).

The spelling of 21030100331100 in words is "twenty-one trillion, thirty billion, one hundred million, three hundred thirty-one thousand, one hundred".