221111120105 has 8 divisors (see below), whose sum is σ = 265391266752. Its totient is φ = 176850281008.

The previous prime is 221111120081. The next prime is 221111120123. The reversal of 221111120105 is 501021111122.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221111120105 is a prime.

It is a super-2 number, since 2×221111120105² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4801679 + ... + 4847508.

It is an arithmetic number, because the mean of its divisors is an integer number (33173908344).

Almost surely, 2^221111120105 is an apocalyptic number.

It is an amenable number.

221111120105 is a deficient number, since it is larger than the sum of its proper divisors (44280146647).

221111120105 is an equidigital number, since it uses as much as digits as its factorization.

221111120105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9653775.

The product of its (nonzero) digits is 40, while the sum is 17.

Adding to 221111120105 its reverse (501021111122), we get a palindrome (722132231227).

The spelling of 221111120105 in words is "two hundred twenty-one billion, one hundred eleven million, one hundred twenty thousand, one hundred five".