222221012201 has 4 divisors (see below), whose sum is σ = 222229861632. Its totient is φ = 222212162772.

The previous prime is 222221012183. The next prime is 222221012207. The reversal of 222221012201 is 102210122222.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 222221012201 - 2¹⁸ = 222220750057 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 222221012201.

It is not an unprimeable number, because it can be changed into a prime (222221012207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4386941 + ... + 4437306.

It is an arithmetic number, because the mean of its divisors is an integer number (55557465408).

Almost surely, 2^222221012201 is an apocalyptic number.

It is an amenable number.

222221012201 is a deficient number, since it is larger than the sum of its proper divisors (8849431).

222221012201 is an equidigital number, since it uses as much as digits as its factorization.

222221012201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8849430.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 222221012201 its reverse (102210122222), we get a palindrome (324431134423).

The spelling of 222221012201 in words is "two hundred twenty-two billion, two hundred twenty-one million, twelve thousand, two hundred one".