20221212112122 has 16 divisors (see below), whose sum is σ = 46219913399232. Its totient is φ = 5777489174880.

The previous prime is 20221212112111. The next prime is 20221212112141. The reversal of 20221212112122 is 22121121212202.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 240728715579 + ... + 240728715662.

It is an arithmetic number, because the mean of its divisors is an integer number (2888744587452).

Almost surely, 2^{20221212112122} is an apocalyptic number.

20221212112122 is an abundant number, since it is smaller than the sum of its proper divisors (25998701287110).

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

20221212112122 is a wasteful number, since it uses less digits than its factorization.

20221212112122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481457431253.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 20221212112122 its reverse (22121121212202), we get a palindrome (42342333324324).

The spelling of 20221212112122 in words is "twenty trillion, two hundred twenty-one billion, two hundred twelve million, one hundred twelve thousand, one hundred twenty-two".