11221020005 has 32 divisors (see below), whose sum is σ = 15228186624. Its totient is φ = 7875369216.

The previous prime is 11221019993. The next prime is 11221020011. The reversal of 11221020005 is 50002012211.

It is not a de Polignac number, because 11221020005 - 2³² = 6926052709 is a prime.

It is a super-2 number, since 2×11221020005² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 210812 + ... + 258618.

It is an arithmetic number, because the mean of its divisors is an integer number (475880832).

Almost surely, 2^11221020005 is an apocalyptic number.

It is an amenable number.

11221020005 is a deficient number, since it is larger than the sum of its proper divisors (4007166619).

11221020005 is a wasteful number, since it uses less digits than its factorization.

11221020005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48005.

The product of its (nonzero) digits is 40, while the sum is 14.

Adding to 11221020005 its reverse (50002012211), we get a palindrome (61223032216).

The spelling of 11221020005 in words is "eleven billion, two hundred twenty-one million, twenty thousand, five".