221022221101 has 16 divisors (see below), whose sum is σ = 264840445440. Its totient is φ = 182077798320.

The previous prime is 221022221099. The next prime is 221022221131. The reversal of 221022221101 is 101122220122.

It is a happy number.

It is not a de Polignac number, because 221022221101 - 2¹ = 221022221099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221022221131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22984815 + ... + 22994428.

It is an arithmetic number, because the mean of its divisors is an integer number (16552527840).

Almost surely, 2^221022221101 is an apocalyptic number.

It is an amenable number.

221022221101 is a deficient number, since it is larger than the sum of its proper divisors (43818224339).

221022221101 is a wasteful number, since it uses less digits than its factorization.

221022221101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45979296.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 221022221101 its reverse (101122220122), we get a palindrome (322144441223).

The spelling of 221022221101 in words is "two hundred twenty-one billion, twenty-two million, two hundred twenty-one thousand, one hundred one".