20220112211100 has 144 divisors (see below), whose sum is σ = 59871308407680. Its totient is φ = 5265997228800.

The previous prime is 20220112211093. The next prime is 20220112211107. The reversal of 20220112211100 is 111221102202.

It is an interprime number because it is at equal distance from previous prime (20220112211093) and next prime (20220112211107).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20220112211100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20220112211107) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 111739695 + ... + 111920505.

Almost surely, 2^{20220112211100} is an apocalyptic number.

20220112211100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20220112211100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29935654203840).

20220112211100 is an abundant number, since it is smaller than the sum of its proper divisors (39651196196580).

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

20220112211100 is a wasteful number, since it uses less digits than its factorization.

20220112211100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189540 (or 189533 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20220112211100 its reverse (111221102202), we get a palindrome (20331333313302).

The spelling of 20220112211100 in words is "twenty trillion, two hundred twenty billion, one hundred twelve million, two hundred eleven thousand, one hundred".