221120101022201 has 4 divisors (see below), whose sum is σ = 224234468642304. Its totient is φ = 218005733402100.

The previous prime is 221120101022189. The next prime is 221120101022267. The reversal of 221120101022201 is 102220101021122.

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 a de Polignac number, because none of the positive numbers 2^k-221120101022201 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 221120101022201.

It is not an unprimeable number, because it can be changed into a prime (221120101022291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1557183809945 + ... + 1557183810086.

It is an arithmetic number, because the mean of its divisors is an integer number (56058617160576).

Almost surely, 2^{221120101022201} is an apocalyptic number.

It is an amenable number.

221120101022201 is a deficient number, since it is larger than the sum of its proper divisors (3114367620103).

221120101022201 is an equidigital number, since it uses as much as digits as its factorization.

221120101022201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3114367620102.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 221120101022201 its reverse (102220101021122), we get a palindrome (323340202043323).

The spelling of 221120101022201 in words is "two hundred twenty-one trillion, one hundred twenty billion, one hundred one million, twenty-two thousand, two hundred one".