221100022111 has 8 divisors (see below), whose sum is σ = 233480439920. Its totient is φ = 208793961792.

The previous prime is 221100022069. The next prime is 221100022181. The reversal of 221100022111 is 111220001122.

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 221100022111 - 2⁹ = 221100021599 is a prime.

It is a Duffinian number.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 221100022091 and 221100022100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221100022181) 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 7 ways as a sum of consecutive naturals, for example, 18583260 + ... + 18595153.

It is an arithmetic number, because the mean of its divisors is an integer number (29185054990).

Almost surely, 2^221100022111 is an apocalyptic number.

221100022111 is a deficient number, since it is larger than the sum of its proper divisors (12380417809).

221100022111 is a wasteful number, since it uses less digits than its factorization.

221100022111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37178745.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 221100022111 its reverse (111220001122), we get a palindrome (332320023233).

The spelling of 221100022111 in words is "two hundred twenty-one billion, one hundred million, twenty-two thousand, one hundred eleven".