221120122101 has 4 divisors (see below), whose sum is σ = 294826829472. Its totient is φ = 147413414732.

The previous prime is 221120122099. The next prime is 221120122109. The reversal of 221120122101 is 101221021122.

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 221120122101 - 2¹ = 221120122099 is a prime.

It is a super-2 number, since 2×221120122101² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221120122109) 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, 36853353681 + ... + 36853353686.

It is an arithmetic number, because the mean of its divisors is an integer number (73706707368).

Almost surely, 2^221120122101 is an apocalyptic number.

It is an amenable number.

221120122101 is a deficient number, since it is larger than the sum of its proper divisors (73706707371).

221120122101 is an equidigital number, since it uses as much as digits as its factorization.

221120122101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73706707370.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 221120122101 its reverse (101221021122), we get a palindrome (322341143223).

The spelling of 221120122101 in words is "two hundred twenty-one billion, one hundred twenty million, one hundred twenty-two thousand, one hundred one".