21112023110112 has 384 divisors, whose sum is σ = 69392119910400. Its totient is φ = 6186693427200.

The previous prime is 21112023110041. The next prime is 21112023110131. The reversal of 21112023110112 is 21101132021112.

It is a happy number.

21112023110112 is a `hidden beast` number, since 211 + 120 + 231 + 101 + 1 + 2 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 415099788 + ... + 415150644.

It is an arithmetic number, because the mean of its divisors is an integer number (180708645600).

Almost surely, 2^{21112023110112} is an apocalyptic number.

21112023110112 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 21112023110112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34696059955200).

21112023110112 is an abundant number, since it is smaller than the sum of its proper divisors (48280096800288).

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

21112023110112 is a wasteful number, since it uses less digits than its factorization.

21112023110112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52327 (or 52313 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 21112023110112 its reverse (21101132021112), we get a palindrome (42213155131224).

The spelling of 21112023110112 in words is "twenty-one trillion, one hundred twelve billion, twenty-three million, one hundred ten thousand, one hundred twelve".