21201112110222 has 96 divisors (see below), whose sum is σ = 51468824425824. Its totient is φ = 6250610073600.

The previous prime is 21201112110203. The next prime is 21201112110239. The reversal of 21201112110222 is 22201121110212.

21201112110222 is a `hidden beast` number, since 2 + 120 + 111 + 211 + 0 + 222 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 21201112110195 and 21201112110204.

It is a congruent number.

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, 160820398 + ... + 160952174.

It is an arithmetic number, because the mean of its divisors is an integer number (536133587769).

Almost surely, 2^{21201112110222} is an apocalyptic number.

21201112110222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21201112110222 is an abundant number, since it is smaller than the sum of its proper divisors (30267712315602).

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

21201112110222 is a wasteful number, since it uses less digits than its factorization.

21201112110222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153794 (or 153791 counting only the distinct ones).

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

Adding to 21201112110222 its reverse (22201121110212), we get a palindrome (43402233220434).

The spelling of 21201112110222 in words is "twenty-one trillion, two hundred one billion, one hundred twelve million, one hundred ten thousand, two hundred twenty-two".