20111200122112 has 108 divisors (see below), whose sum is σ = 44203461422400. Its totient is φ = 9125209646080.

The previous prime is 20111200122077. The next prime is 20111200122119. The reversal of 20111200122112 is 21122100211102.

It is a super-2 number, since 2×20111200122112² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111200122119) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16862889 + ... + 18016087.

Almost surely, 2^{20111200122112} is an apocalyptic number.

20111200122112 is a gapful number since it is divisible by the number (22) 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 20111200122112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22101730711200).

20111200122112 is an abundant number, since it is smaller than the sum of its proper divisors (24092261300288).

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

20111200122112 is a wasteful number, since it uses less digits than its factorization.

20111200122112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1153800 (or 1153775 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 20111200122112 its reverse (21122100211102), we get a palindrome (41233300333214).

The spelling of 20111200122112 in words is "twenty trillion, one hundred eleven billion, two hundred million, one hundred twenty-two thousand, one hundred twelve".