222000020 has 96 divisors (see below), whose sum is σ = 523950336. Its totient is φ = 78336000.

The previous prime is 222000019. The next prime is 222000043. The reversal of 222000020 is 20000222.

It is a junction number, because it is equal to n+sod(n) for n = 221999971 and 222000007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2155289 + ... + 2155391.

It is an arithmetic number, because the mean of its divisors is an integer number (5457816).

Almost surely, 2^222000020 is an apocalyptic number.

222000020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222000020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261975168).

222000020 is an abundant number, since it is smaller than the sum of its proper divisors (301950316).

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

222000020 is a wasteful number, since it uses less digits than its factorization.

222000020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321 (or 319 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 8.

The square root of 222000020 is about 14899.6650969074. The cubic root of 222000020 is about 605.5049128344.

Adding to 222000020 its reverse (20000222), we get a palindrome (242000242).

It can be divided in two parts, 2 and 22000020, that added together give a palindrome (22000022).

The spelling of 222000020 in words is "two hundred twenty-two million, twenty", and thus it is an aban number.