105220111 has 2 divisors, whose sum is σ = 105220112. Its totient is φ = 105220110.

The previous prime is 105220103. The next prime is 105220127. The reversal of 105220111 is 111022501.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 105220111 - 2³ = 105220103 is a prime.

It is a super-2 number, since 2×105220111² = 22142543517704642, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 105220091 and 105220100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105220151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52610055 + 52610056.

It is an arithmetic number, because the mean of its divisors is an integer number (52610056).

Almost surely, 2^105220111 is an apocalyptic number.

105220111 is a deficient number, since it is larger than the sum of its proper divisors (1).

105220111 is an equidigital number, since it uses as much as digits as its factorization.

105220111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20, while the sum is 13.

The square root of 105220111 is about 10257.6854601806. The cubic root of 105220111 is about 472.0988239283.

Adding to 105220111 its reverse (111022501), we get a palindrome (216242612).

The spelling of 105220111 in words is "one hundred five million, two hundred twenty thousand, one hundred eleven".