21202122200112 has 240 divisors, whose sum is σ = 67995176101632. Its totient is φ = 6041501959680.

The previous prime is 21202122200099. The next prime is 21202122200143. The reversal of 21202122200112 is 21100222120212.

It is a happy number.

21202122200112 is a `hidden beast` number, since 2 + 120 + 212 + 220 + 0 + 112 = 666.

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, 946638898 + ... + 946661294.

Almost surely, 2^{21202122200112} 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 21202122200112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33997588050816).

21202122200112 is an abundant number, since it is smaller than the sum of its proper divisors (46793053901520).

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

21202122200112 is a wasteful number, since it uses less digits than its factorization.

21202122200112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24896 (or 24887 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 21202122200112 its reverse (21100222120212), we get a palindrome (42302344320324).

The spelling of 21202122200112 in words is "twenty-one trillion, two hundred two billion, one hundred twenty-two million, two hundred thousand, one hundred twelve".