222321020 has 24 divisors (see below), whose sum is σ = 467812800. Its totient is φ = 88749632.

The previous prime is 222321007. The next prime is 222321023. The reversal of 222321020 is 20123222.

It is a junction number, because it is equal to n+sod(n) for n = 222320986 and 222321004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222321023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 740 + ... + 21099.

It is an arithmetic number, because the mean of its divisors is an integer number (19492200).

Almost surely, 2^222321020 is an apocalyptic number.

222321020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222321020 is an abundant number, since it is smaller than the sum of its proper divisors (245491780).

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

222321020 is a wasteful number, since it uses less digits than its factorization.

222321020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22357 (or 22355 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 222321020 is about 14910.4332599693. The cubic root of 222321020 is about 605.7966147162.

Adding to 222321020 its reverse (20123222), we get a palindrome (242444242).

The spelling of 222321020 in words is "two hundred twenty-two million, three hundred twenty-one thousand, twenty".