221311101 has 8 divisors (see below), whose sum is σ = 321907104. Its totient is φ = 134127920.

The previous prime is 221311091. The next prime is 221311121. The reversal of 221311101 is 101113122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 221311101 - 2⁹ = 221310589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221311121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3353166 + ... + 3353231.

It is an arithmetic number, because the mean of its divisors is an integer number (40238388).

Almost surely, 2^221311101 is an apocalyptic number.

It is an amenable number.

221311101 is a deficient number, since it is larger than the sum of its proper divisors (100596003).

221311101 is a wasteful number, since it uses less digits than its factorization.

221311101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6706411.

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

The square root of 221311101 is about 14876.5285265078. The cubic root of 221311101 is about 604.8779217747.

Adding to 221311101 its reverse (101113122), we get a palindrome (322424223).

It can be divided in two parts, 22131 and 1101, that added together give a palindrome (23232).

The spelling of 221311101 in words is "two hundred twenty-one million, three hundred eleven thousand, one hundred one".