222134220 has 432 divisors, whose sum is σ = 892329984. Its totient is φ = 43718400.

The previous prime is 222134179. The next prime is 222134293. The reversal of 222134220 is 22431222.

It is a super-2 number, since 2×222134220² = 98687223390016800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 222134193 and 222134202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 4726237 + ... + 4726283.

Almost surely, 2^222134220 is an apocalyptic number.

222134220 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 222134220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (446164992).

222134220 is an abundant number, since it is smaller than the sum of its proper divisors (670195764).

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

222134220 is a wasteful number, since it uses less digits than its factorization.

222134220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122 (or 106 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 222134220 is about 14904.1678734507. The cubic root of 222134220 is about 605.6268983956.

Adding to 222134220 its reverse (22431222), we get a palindrome (244565442).

The spelling of 222134220 in words is "two hundred twenty-two million, one hundred thirty-four thousand, two hundred twenty".