21022120222112 has 24 divisors (see below), whose sum is σ = 41387443138692. Its totient is φ = 10511023552000.

The previous prime is 21022120222087. The next prime is 21022120222151. The reversal of 21022120222112 is 21122202122012.

It can be written as a sum of positive squares in 2 ways, for example, as 20594932490896 + 427187731216 = 4538164^2 + 653596^2 .

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 3 ways as a sum of consecutive naturals, for example, 9819812 + ... + 11767452.

Almost surely, 2^{21022120222112} is an apocalyptic number.

It is an amenable number.

21022120222112 is a deficient number, since it is larger than the sum of its proper divisors (20365322916580).

21022120222112 is a wasteful number, since it uses less digits than its factorization.

21022120222112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2284952 (or 2284944 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 21022120222112 its reverse (21122202122012), we get a palindrome (42144322344124).

The spelling of 21022120222112 in words is "twenty-one trillion, twenty-two billion, one hundred twenty million, two hundred twenty-two thousand, one hundred twelve".