11220021105 has 32 divisors (see below), whose sum is σ = 18048614400. Its totient is φ = 5951881152.

The previous prime is 11220021103. The next prime is 11220021119. The reversal of 11220021105 is 50112002211.

It is not a de Polignac number, because 11220021105 - 2¹ = 11220021103 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (11220021103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4583992 + ... + 4586438.

It is an arithmetic number, because the mean of its divisors is an integer number (564019200).

Almost surely, 2^11220021105 is an apocalyptic number.

11220021105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11220021105 is a deficient number, since it is larger than the sum of its proper divisors (6828593295).

11220021105 is a wasteful number, since it uses less digits than its factorization.

11220021105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3973.

The product of its (nonzero) digits is 40, while the sum is 15.

Adding to 11220021105 its reverse (50112002211), we get a palindrome (61332023316).

The spelling of 11220021105 in words is "eleven billion, two hundred twenty million, twenty-one thousand, one hundred five".