221102112022121 has 12 divisors (see below), whose sum is σ = 243030019448496. Its totient is φ = 201001568316120.

The previous prime is 221102112022109. The next prime is 221102112022157. The reversal of 221102112022121 is 121220211201122.

221102112022121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 221102112022121 - 2¹⁰ = 221102112021097 is a prime.

It is a super-2 number, since 2×221102112022121² (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 = 221102112022093 and 221102112022102.

It is not an unprimeable number, because it can be changed into a prime (221102112022321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88941566 + ... + 91393688.

It is an arithmetic number, because the mean of its divisors is an integer number (20252501620708).

Almost surely, 2^{221102112022121} is an apocalyptic number.

It is an amenable number.

221102112022121 is a deficient number, since it is larger than the sum of its proper divisors (21927907426375).

221102112022121 is a wasteful number, since it uses less digits than its factorization.

221102112022121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3197332 (or 3197321 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 221102112022121 its reverse (121220211201122), we get a palindrome (342322323223243).

The spelling of 221102112022121 in words is "two hundred twenty-one trillion, one hundred two billion, one hundred twelve million, twenty-two thousand, one hundred twenty-one".