20201122220112 has 80 divisors (see below), whose sum is σ = 60505776727680. Its totient is φ = 6440937516288.

The previous prime is 20201122220101. The next prime is 20201122220119. The reversal of 20201122220112 is 21102222110202.

It is a happy number.

It is a super-3 number, since 3×20201122220112³ (a number of 41 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20201122220119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1016552173 + ... + 1016572044.

It is an arithmetic number, because the mean of its divisors is an integer number (756322209096).

Almost surely, 2^{20201122220112} is an apocalyptic number.

It is an amenable number.

20201122220112 is an abundant number, since it is smaller than the sum of its proper divisors (40304654507568).

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

20201122220112 is a wasteful number, since it uses less digits than its factorization.

20201122220112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2033124257 (or 2033124245 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 20201122220112 its reverse (21102222110202), we get a palindrome (41303344330314).

The spelling of 20201122220112 in words is "twenty trillion, two hundred one billion, one hundred twenty-two million, two hundred twenty thousand, one hundred twelve".