11221020006 has 64 divisors (see below), whose sum is σ = 25922308608. Its totient is φ = 3171829248.

The previous prime is 11221019993. The next prime is 11221020011. The reversal of 11221020006 is 60002012211.

It is a super-2 number, since 2×11221020006² (a number of 21 digits) contains 22 as substring.

It is a Curzon 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, 3049840 + ... + 3053516.

It is an arithmetic number, because the mean of its divisors is an integer number (405036072).

Almost surely, 2^11221020006 is an apocalyptic number.

11221020006 is an abundant number, since it is smaller than the sum of its proper divisors (14701288602).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11221020006 is a wasteful number, since it uses less digits than its factorization.

11221020006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4445.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 11221020006 its reverse (60002012211), we get a palindrome (71223032217).

The spelling of 11221020006 in words is "eleven billion, two hundred twenty-one million, twenty thousand, six".