21233100223020 has 144 divisors (see below), whose sum is σ = 70133315228928. Its totient is φ = 4784923946880.

The previous prime is 21233100223019. The next prime is 21233100223039. The reversal of 21233100223020 is 2032200133212.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 50651422 + ... + 51068901.

It is an arithmetic number, because the mean of its divisors is an integer number (487036911312).

Almost surely, 2^{21233100223020} is an apocalyptic number.

21233100223020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21233100223020 is an abundant number, since it is smaller than the sum of its proper divisors (48900215005908).

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

21233100223020 is a wasteful number, since it uses less digits than its factorization.

21233100223020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101720420 (or 101720411 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 21233100223020 its reverse (2032200133212), we get a palindrome (23265300356232).

The spelling of 21233100223020 in words is "twenty-one trillion, two hundred thirty-three billion, one hundred million, two hundred twenty-three thousand, twenty".