11221120005 has 16 divisors (see below), whose sum is σ = 17955108864. Its totient is φ = 5984158400.

The previous prime is 11221119989. The next prime is 11221120019. The reversal of 11221120005 is 50002112211.

It is not a de Polignac number, because 11221120005 - 2⁴ = 11221119989 is a prime.

It is a super-2 number, since 2×11221120005² (a number of 21 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 364732 + ... + 394298.

It is an arithmetic number, because the mean of its divisors is an integer number (1122194304).

Almost surely, 2^11221120005 is an apocalyptic number.

11221120005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11221120005 is a deficient number, since it is larger than the sum of its proper divisors (6733988859).

11221120005 is a wasteful number, since it uses less digits than its factorization.

11221120005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54876.

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

Adding to 11221120005 its reverse (50002112211), we get a palindrome (61223232216).

The spelling of 11221120005 in words is "eleven billion, two hundred twenty-one million, one hundred twenty thousand, five".