20222122222 has 4 divisors (see below), whose sum is σ = 30333183336. Its totient is φ = 10111061110.

The previous prime is 20222122201. The next prime is 20222122247. The reversal of 20222122222 is 22222122202.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20222122222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5055530554 + ... + 5055530557.

It is an arithmetic number, because the mean of its divisors is an integer number (7583295834).

Almost surely, 2^20222122222 is an apocalyptic number.

20222122222 is a deficient number, since it is larger than the sum of its proper divisors (10111061114).

20222122222 is a wasteful number, since it uses less digits than its factorization.

20222122222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10111061113.

The product of its (nonzero) digits is 512, while the sum is 19.

Adding to 20222122222 its reverse (22222122202), we get a palindrome (42444244424).

The spelling of 20222122222 in words is "twenty billion, two hundred twenty-two million, one hundred twenty-two thousand, two hundred twenty-two".