221122110022201 has 4 divisors (see below), whose sum is σ = 221122918080400. Its totient is φ = 221121301964004.

The previous prime is 221122110022159. The next prime is 221122110022207. The reversal of 221122110022201 is 102220011221122.

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 221122110022201 - 2³⁵ = 221087750283833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221122110022207) 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 3 ways as a sum of consecutive naturals, for example, 403618491 + ... + 404165968.

It is an arithmetic number, because the mean of its divisors is an integer number (55280729520100).

Almost surely, 2^{221122110022201} is an apocalyptic number.

It is an amenable number.

221122110022201 is a deficient number, since it is larger than the sum of its proper divisors (808058199).

221122110022201 is an equidigital number, since it uses as much as digits as its factorization.

221122110022201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808058198.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 221122110022201 its reverse (102220011221122), we get a palindrome (323342121243323).

The spelling of 221122110022201 in words is "two hundred twenty-one trillion, one hundred twenty-two billion, one hundred ten million, twenty-two thousand, two hundred one".