21112202010112 has 80 divisors (see below), whose sum is σ = 44488573866000. Its totient is φ = 9981319495680.

The previous prime is 21112202010083. The next prime is 21112202010127. The reversal of 21112202010112 is 21101020221112.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2985514 + ... + 7151062.

It is an arithmetic number, because the mean of its divisors is an integer number (556107173325).

Almost surely, 2^{21112202010112} 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 21112202010112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22244286933000).

21112202010112 is an abundant number, since it is smaller than the sum of its proper divisors (23376371855888).

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

21112202010112 is an equidigital number, since it uses as much as digits as its factorization.

21112202010112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4166107 (or 4166091 counting only the distinct ones).

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

Adding to 21112202010112 its reverse (21101020221112), we get a palindrome (42213222231224).

The spelling of 21112202010112 in words is "twenty-one trillion, one hundred twelve billion, two hundred two million, ten thousand, one hundred twelve".