21222200120112 has 40 divisors (see below), whose sum is σ = 60915574420080. Its totient is φ = 7074066706560.

The previous prime is 21222200120071. The next prime is 21222200120131. The reversal of 21222200120112 is 21102100222212.

It is a happy number.

21222200120112 is a `hidden beast` number, since 212 + 2 + 220 + 0 + 120 + 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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24562731189 + ... + 24562732052.

It is an arithmetic number, because the mean of its divisors is an integer number (1522889360502).

Almost surely, 2^{21222200120112} is an apocalyptic number.

It is an amenable number.

21222200120112 is an abundant number, since it is smaller than the sum of its proper divisors (39693374299968).

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

21222200120112 is a wasteful number, since it uses less digits than its factorization.

21222200120112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49125463258 (or 49125463246 counting only the distinct ones).

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

Adding to 21222200120112 its reverse (21102100222212), we get a palindrome (42324300342324).

The spelling of 21222200120112 in words is "twenty-one trillion, two hundred twenty-two billion, two hundred million, one hundred twenty thousand, one hundred twelve".