221120201121101 has 4 divisors (see below), whose sum is σ = 221722708481472. Its totient is φ = 220517693760732.

The previous prime is 221120201121041. The next prime is 221120201121103. The reversal of 221120201121101 is 101121102021122.

221120201121101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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-221120201121101 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 221120201121101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221120201121103) 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, 301253679635 + ... + 301253680368.

It is an arithmetic number, because the mean of its divisors is an integer number (55430677120368).

Almost surely, 2^{221120201121101} is an apocalyptic number.

It is an amenable number.

221120201121101 is a deficient number, since it is larger than the sum of its proper divisors (602507360371).

221120201121101 is an equidigital number, since it uses as much as digits as its factorization.

221120201121101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602507360370.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 221120201121101 its reverse (101121102021122), we get a palindrome (322241303142223).

The spelling of 221120201121101 in words is "two hundred twenty-one trillion, one hundred twenty billion, two hundred one million, one hundred twenty-one thousand, one hundred one".