222202420 has 72 divisors (see below), whose sum is σ = 526496544. Its totient is φ = 78120000.

The previous prime is 222202403. The next prime is 222202483. The reversal of 222202420 is 24202222.

222202420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 222202394 and 222202403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 210895 + ... + 211945.

It is an arithmetic number, because the mean of its divisors is an integer number (7312452).

Almost surely, 2^222202420 is an apocalyptic number.

222202420 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 222202420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (263248272).

222202420 is an abundant number, since it is smaller than the sum of its proper divisors (304294124).

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

222202420 is a wasteful number, since it uses less digits than its factorization.

222202420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133 (or 1100 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 222202420 is about 14906.4556484766. The cubic root of 222202420 is about 605.6888722301.

Adding to 222202420 its reverse (24202222), we get a palindrome (246404642).

The spelling of 222202420 in words is "two hundred twenty-two million, two hundred two thousand, four hundred twenty".