221122101101 has 12 divisors (see below), whose sum is σ = 243065413500. Its totient is φ = 201008639040.

The previous prime is 221122101047. The next prime is 221122101113. The reversal of 221122101101 is 101101221122.

It can be written as a sum of positive squares in 2 ways, for example, as 32962218025 + 188159883076 = 181555^2 + 433774^2 .

It is not a de Polignac number, because 221122101101 - 2¹⁰ = 221122100077 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221122101121) 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, 2663345 + ... + 2745113.

It is an arithmetic number, because the mean of its divisors is an integer number (20255451125).

Almost surely, 2^221122101101 is an apocalyptic number.

It is an amenable number.

221122101101 is a deficient number, since it is larger than the sum of its proper divisors (21943312399).

221122101101 is a wasteful number, since it uses less digits than its factorization.

221122101101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104140 (or 104129 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 221122101101 its reverse (101101221122), we get a palindrome (322223322223).

It can be divided in two parts, 221122 and 101101, that multiplied together give a palindrome (22355655322).

The spelling of 221122101101 in words is "two hundred twenty-one billion, one hundred twenty-two million, one hundred one thousand, one hundred one".