21020330233100 has 36 divisors (see below), whose sum is σ = 49760854481688. Its totient is φ = 7643756448000.

The previous prime is 21020330233073. The next prime is 21020330233109. The reversal of 21020330233100 is 133203302012.

It is a super-2 number, since 2×21020330233100² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (21020330233109) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 9554694461 + ... + 9554696660.

Almost surely, 2^{21020330233100} is an apocalyptic number.

21020330233100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21020330233100 is an abundant number, since it is smaller than the sum of its proper divisors (28740524248588).

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

21020330233100 is a wasteful number, since it uses less digits than its factorization.

21020330233100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19109391146 (or 19109391139 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 21020330233100 its reverse (133203302012), we get a palindrome (21153533535112).

The spelling of 21020330233100 in words is "twenty-one trillion, twenty billion, three hundred thirty million, two hundred thirty-three thousand, one hundred".