223021312220 has 48 divisors (see below), whose sum is σ = 535285470720. Its totient is φ = 76459546944.

The previous prime is 223021312201. The next prime is 223021312243. The reversal of 223021312220 is 22213120322.

It is a happy number.

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 = 223021312192 and 223021312201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2647511 + ... + 2730449.

It is an arithmetic number, because the mean of its divisors is an integer number (11151780640).

Almost surely, 2^223021312220 is an apocalyptic number.

223021312220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223021312220 is an abundant number, since it is smaller than the sum of its proper divisors (312264158500).

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

223021312220 is a wasteful number, since it uses less digits than its factorization.

223021312220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102162 (or 102160 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 223021312220 its reverse (22213120322), we get a palindrome (245234432542).

The spelling of 223021312220 in words is "two hundred twenty-three billion, twenty-one million, three hundred twelve thousand, two hundred twenty".