11220105 has 32 divisors (see below), whose sum is σ = 19506816. Its totient is φ = 5474304.

The previous prime is 11220103. The next prime is 11220107. The reversal of 11220105 is 50102211.

It is an interprime number because it is at equal distance from previous prime (11220103) and next prime (11220107).

It is not a de Polignac number, because 11220105 - 2¹ = 11220103 is a prime.

It is a super-2 number, since 2×11220105² = 251781512422050, which contains 22 as substring.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (11220103) 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 in 31 ways as a sum of consecutive naturals, for example, 31609 + ... + 31961.

It is an arithmetic number, because the mean of its divisors is an integer number (609588).

Almost surely, 2^11220105 is an apocalyptic number.

11220105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11220105 is a deficient number, since it is larger than the sum of its proper divisors (8286711).

11220105 is a wasteful number, since it uses less digits than its factorization.

11220105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537.

The product of its (nonzero) digits is 20, while the sum is 12.

The square root of 11220105 is about 3349.6425182398. The cubic root of 11220105 is about 223.8715848250.

Adding to 11220105 its reverse (50102211), we get a palindrome (61322316).

It can be divided in two parts, 11220 and 105, that added together give a triangular number (11325 = T₁₅₀).

The spelling of 11220105 in words is "eleven million, two hundred twenty thousand, one hundred five".