221120101101121 has 4 divisors (see below), whose sum is σ = 222584472631744. Its totient is φ = 219655729570500.

The previous prime is 221120101101113. The next prime is 221120101101143. The reversal of 221120101101121 is 121101101021122.

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 221120101101121 - 2³ = 221120101101113 is a prime.

It is a super-2 number, since 2×221120101101121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221120101101095 and 221120101101104.

It is not an unprimeable number, because it can be changed into a prime (221120101101521) 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, 732185765085 + ... + 732185765386.

It is an arithmetic number, because the mean of its divisors is an integer number (55646118157936).

Almost surely, 2^{221120101101121} is an apocalyptic number.

It is an amenable number.

221120101101121 is a deficient number, since it is larger than the sum of its proper divisors (1464371530623).

221120101101121 is a wasteful number, since it uses less digits than its factorization.

221120101101121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1464371530622.

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 221120101101121 its reverse (121101101021122), we get a palindrome (342221202122243).

The spelling of 221120101101121 in words is "two hundred twenty-one trillion, one hundred twenty billion, one hundred one million, one hundred one thousand, one hundred twenty-one".