222443201421 has 24 divisors (see below), whose sum is σ = 367365061440. Its totient is φ = 127055972736.

The previous prime is 222443201419. The next prime is 222443201441. The reversal of 222443201421 is 124102344222.

It is a happy number.

222443201421 is a `hidden beast` number, since 2 + 224 + 432 + 0 + 1 + 4 + 2 + 1 = 666.

It is not a de Polignac number, because 222443201421 - 2¹ = 222443201419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222443201441) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 607420 + ... + 902133.

It is an arithmetic number, because the mean of its divisors is an integer number (15306877560).

Almost surely, 2^222443201421 is an apocalyptic number.

222443201421 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

222443201421 is a deficient number, since it is larger than the sum of its proper divisors (144921860019).

222443201421 is a wasteful number, since it uses less digits than its factorization.

222443201421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1511905 (or 1511902 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 222443201421 its reverse (124102344222), we get a palindrome (346545545643).

The spelling of 222443201421 in words is "two hundred twenty-two billion, four hundred forty-three million, two hundred one thousand, four hundred twenty-one".