21023002223320 has 32 divisors (see below), whose sum is σ = 47603040080400. Its totient is φ = 8355639097728.

The previous prime is 21023002223309. The next prime is 21023002223339. The reversal of 21023002223320 is 2332220032012.

It is a junction number, because it is equal to n+sod(n) for n = 21023002223291 and 21023002223300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1673799630 + ... + 1673812189.

Almost surely, 2^{21023002223320} is an apocalyptic number.

21023002223320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21023002223320 is an abundant number, since it is smaller than the sum of its proper divisors (26580037857080).

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

21023002223320 is a wasteful number, since it uses less digits than its factorization.

21023002223320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3347611987 (or 3347611983 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 21023002223320 its reverse (2332220032012), we get a palindrome (23355222255332).

The spelling of 21023002223320 in words is "twenty-one trillion, twenty-three billion, two million, two hundred twenty-three thousand, three hundred twenty".