20221122112112 has 80 divisors (see below), whose sum is σ = 41644433276160. Its totient is φ = 9484613139456.

The previous prime is 20221122112021. The next prime is 20221122112129. The reversal of 20221122112112 is 21121122112202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 514342568 + ... + 514381880.

It is an arithmetic number, because the mean of its divisors is an integer number (520555415952).

Almost surely, 2^{20221122112112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20221122112112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20822216638080).

20221122112112 is an abundant number, since it is smaller than the sum of its proper divisors (21423311164048).

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

20221122112112 is a wasteful number, since it uses less digits than its factorization.

20221122112112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55870 (or 55864 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 20221122112112 its reverse (21121122112202), we get a palindrome (41342244224314).

The spelling of 20221122112112 in words is "twenty trillion, two hundred twenty-one billion, one hundred twenty-two million, one hundred twelve thousand, one hundred twelve".