20000222 has 16 divisors (see below), whose sum is σ = 33055344. Its totient is φ = 9000000.

The previous prime is 20000221. The next prime is 20000243. The reversal of 20000222 is 22200002.

20000222 is a modest number, since divided by 222 gives 20 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2279 + ... + 6722.

It is an arithmetic number, because the mean of its divisors is an integer number (2065959).

Almost surely, 2^20000222 is an apocalyptic number.

20000222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20000222 is a deficient number, since it is larger than the sum of its proper divisors (13055122).

20000222 is a wasteful number, since it uses less digits than its factorization.

20000222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9115.

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

The square root of 20000222 is about 4472.1607752853. The cubic root of 20000222 is about 271.4427659903.

Adding to 20000222 its reverse (22200002), we get a palindrome (42200224).

It can be divided in two parts, 200002 and 22, that multiplied together give a palindrome (4400044).

The spelling of 20000222 in words is "twenty million, two hundred twenty-two", and thus it is an aban number.