20222221212022 has 4 divisors (see below), whose sum is σ = 30333331818036. Its totient is φ = 10111110606010.

The previous prime is 20222221212007. The next prime is 20222221212023. The reversal of 20222221212022 is 22021212222202.

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

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 20222221211984 and 20222221212002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20222221212023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5055555303004 + ... + 5055555303007.

It is an arithmetic number, because the mean of its divisors is an integer number (7583332954509).

Almost surely, 2^{20222221212022} is an apocalyptic number.

20222221212022 is a deficient number, since it is larger than the sum of its proper divisors (10111110606014).

20222221212022 is a wasteful number, since it uses less digits than its factorization.

20222221212022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10111110606013.

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 20222221212022 its reverse (22021212222202), we get a palindrome (42243433434224).

The spelling of 20222221212022 in words is "twenty trillion, two hundred twenty-two billion, two hundred twenty-one million, two hundred twelve thousand, twenty-two".