11022221001 has 32 divisors (see below), whose sum is σ = 16208873856. Its totient is φ = 6606720000.

The previous prime is 11022220999. The next prime is 11022221011. The reversal of 11022221001 is 10012222011.

It is not a de Polignac number, because 11022221001 - 2¹ = 11022220999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11022221011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5921811 + ... + 5923671.

It is an arithmetic number, because the mean of its divisors is an integer number (506527308).

Almost surely, 2^11022221001 is an apocalyptic number.

11022221001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11022221001 is a deficient number, since it is larger than the sum of its proper divisors (5186652855).

11022221001 is a wasteful number, since it uses less digits than its factorization.

11022221001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3753.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 11022221001 its reverse (10012222011), we get a palindrome (21034443012).

It can be divided in two parts, 110 and 22221001, that added together give a triangular number (22221111 = T₆₆₆₆).

The spelling of 11022221001 in words is "eleven billion, twenty-two million, two hundred twenty-one thousand, one".