221320001101 has 16 divisors (see below), whose sum is σ = 225846007920. Its totient is φ = 216837734400.

The previous prime is 221320001093. The next prime is 221320001137. The reversal of 221320001101 is 101100023122.

It can be written as a sum of positive squares in 8 ways, for example, as 3837678601 + 217482322500 = 61949^2 + 466350^2 .

It is a cyclic number.

It is not a de Polignac number, because 221320001101 - 2³ = 221320001093 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 (221320001701) 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, 9865185 + ... + 9887593.

It is an arithmetic number, because the mean of its divisors is an integer number (14115375495).

Almost surely, 2^221320001101 is an apocalyptic number.

It is an amenable number.

221320001101 is a deficient number, since it is larger than the sum of its proper divisors (4526006819).

221320001101 is a wasteful number, since it uses less digits than its factorization.

221320001101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23376.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 221320001101 its reverse (101100023122), we get a palindrome (322420024223).

The spelling of 221320001101 in words is "two hundred twenty-one billion, three hundred twenty million, one thousand, one hundred one".