221100111301 has 4 divisors (see below), whose sum is σ = 228724253100. Its totient is φ = 213475969504.

The previous prime is 221100111293. The next prime is 221100111341. The reversal of 221100111301 is 103111001122.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 83896543201 + 137203568100 = 289649^2 + 370410^2 .

It is a cyclic number.

It is not a de Polignac number, because 221100111301 - 2³ = 221100111293 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 (221100111341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3812070856 + ... + 3812070913.

It is an arithmetic number, because the mean of its divisors is an integer number (57181063275).

Almost surely, 2^221100111301 is an apocalyptic number.

It is an amenable number.

221100111301 is a deficient number, since it is larger than the sum of its proper divisors (7624141799).

221100111301 is an equidigital number, since it uses as much as digits as its factorization.

221100111301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7624141798.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 221100111301 its reverse (103111001122), we get a palindrome (324211112423).

The spelling of 221100111301 in words is "two hundred twenty-one billion, one hundred million, one hundred eleven thousand, three hundred one".