21101222210112 has 336 divisors, whose sum is σ = 67778860778304. Its totient is φ = 6220177920000.

The previous prime is 21101222210077. The next prime is 21101222210143.

21101222210112 is a `hidden beast` number, since 21 + 101 + 222 + 210 + 112 = 666.

21101222210112 is nontrivially palindromic in base 10.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2131216362 + ... + 2131226262.

Almost surely, 2^{21101222210112} is an apocalyptic number.

21101222210112 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 21101222210112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33889430389152).

21101222210112 is an abundant number, since it is smaller than the sum of its proper divisors (46677638568192).

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

21101222210112 is a wasteful number, since it uses less digits than its factorization.

21101222210112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19058 (or 19045 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

It can be divided in two parts, 2110122 and 2210112, that added together give a palindrome (4320234).

The spelling of 21101222210112 in words is "twenty-one trillion, one hundred one billion, two hundred twenty-two million, two hundred ten thousand, one hundred twelve".