20002222 has 8 divisors (see below), whose sum is σ = 30076200. Its totient is φ = 9976824.

The previous prime is 20002201. The next prime is 20002261. The reversal of 20002222 is 22220002.

It is a sphenic number, since it is the product of 3 distinct primes.

20002222 is a modest number, since divided by 2222 gives 2000 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 20002199 and 20002208.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 11097 + ... + 12772.

It is an arithmetic number, because the mean of its divisors is an integer number (3759525).

Almost surely, 2^20002222 is an apocalyptic number.

20002222 is a deficient number, since it is larger than the sum of its proper divisors (10073978).

20002222 is a wasteful number, since it uses less digits than its factorization.

20002222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24290.

The product of its (nonzero) digits is 32, while the sum is 10.

The square root of 20002222 is about 4472.3843752522. The cubic root of 20002222 is about 271.4518136805.

Adding to 20002222 its reverse (22220002), we get a palindrome (42222224).

It can be divided in two parts, 20002 and 222, that multiplied together give a palindrome (4440444).

The spelling of 20002222 in words is "twenty million, two thousand, two hundred twenty-two".