221100011101 has 4 divisors (see below), whose sum is σ = 221487227104. Its totient is φ = 220712795100.

The previous prime is 221100010997. The next prime is 221100011117. The reversal of 221100011101 is 101110001122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 221100011101 - 2³³ = 212510076509 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 (221100011131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 193607145 + ... + 193608286.

It is an arithmetic number, because the mean of its divisors is an integer number (55371806776).

Almost surely, 2^221100011101 is an apocalyptic number.

It is an amenable number.

221100011101 is a deficient number, since it is larger than the sum of its proper divisors (387216003).

221100011101 is an equidigital number, since it uses as much as digits as its factorization.

221100011101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387216002.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 221100011101 its reverse (101110001122), we get a palindrome (322210012223).

The spelling of 221100011101 in words is "two hundred twenty-one billion, one hundred million, eleven thousand, one hundred one".