222201000021 has 192 divisors, whose sum is σ = 425894515200. Its totient is φ = 100079400960.

The previous prime is 222200999959. The next prime is 222201000029. The reversal of 222201000021 is 120000102222.

222201000021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 222201000021 - 2⁹ = 222200999509 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 222200999970 and 222201000006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222201000029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 35441275 + ... + 35447543.

It is an arithmetic number, because the mean of its divisors is an integer number (2218200600).

Almost surely, 2^222201000021 is an apocalyptic number.

222201000021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

222201000021 is a deficient number, since it is larger than the sum of its proper divisors (203693515179).

222201000021 is a wasteful number, since it uses less digits than its factorization.

222201000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6380 (or 6369 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 222201000021 its reverse (120000102222), we get a palindrome (342201102243).

The spelling of 222201000021 in words is "two hundred twenty-two billion, two hundred one million, twenty-one", and thus it is an aban number.