221221120122201 has 8 divisors (see below), whose sum is σ = 298695183287680. Its totient is φ = 145613901852432.

The previous prime is 221221120122193. The next prime is 221221120122229. The reversal of 221221120122201 is 102221021122122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 221221120122201 - 2³ = 221221120122193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221221120122271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 466711223650 + ... + 466711224123.

It is an arithmetic number, because the mean of its divisors is an integer number (37336897910960).

Almost surely, 2^{221221120122201} is an apocalyptic number.

It is an amenable number.

221221120122201 is a deficient number, since it is larger than the sum of its proper divisors (77474063165479).

221221120122201 is an equidigital number, since it uses as much as digits as its factorization.

221221120122201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 933422447855.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 221221120122201 its reverse (102221021122122), we get a palindrome (323442141244323).

The spelling of 221221120122201 in words is "two hundred twenty-one trillion, two hundred twenty-one billion, one hundred twenty million, one hundred twenty-two thousand, two hundred one".