223221024020 has 48 divisors (see below), whose sum is σ = 482207040000. Its totient is φ = 86746087680.

The previous prime is 223221024017. The next prime is 223221024029. The reversal of 223221024020 is 20420122322.

It is a super-3 number, since 3×223221024020³ (a number of 35 digits) contains 333 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 223221023983 and 223221024001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223221024029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 373520 + ... + 765479.

It is an arithmetic number, because the mean of its divisors is an integer number (10045980000).

Almost surely, 2^223221024020 is an apocalyptic number.

223221024020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223221024020 is an abundant number, since it is smaller than the sum of its proper divisors (258986015980).

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

223221024020 is a wasteful number, since it uses less digits than its factorization.

223221024020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1139288 (or 1139286 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 223221024020 its reverse (20420122322), we get a palindrome (243641146342).

The spelling of 223221024020 in words is "two hundred twenty-three billion, two hundred twenty-one million, twenty-four thousand, twenty".