1000020222 has 32 divisors (see below), whose sum is σ = 2269555200. Its totient is φ = 326246904.

The previous prime is 1000020221. The next prime is 1000020283. The reversal of 1000020222 is 2220200001.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000020221) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 194472 + ... + 199547.

It is an arithmetic number, because the mean of its divisors is an integer number (70923600).

Almost surely, 2^1000020222 is an apocalyptic number.

1000020222 is an abundant number, since it is smaller than the sum of its proper divisors (1269534978).

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

1000020222 is a wasteful number, since it uses less digits than its factorization.

1000020222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394077 (or 394071 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 1000020222 is about 31623.0963379616. The cubic root of 1000020222 is about 1000.0067406212.

Adding to 1000020222 its reverse (2220200001), we get a palindrome (3220220223).

The spelling of 1000020222 in words is "one billion, twenty thousand, two hundred twenty-two".