11000002221 has 12 divisors (see below), whose sum is σ = 17111114748. Its totient is φ = 6769232064.

The previous prime is 11000002199. The next prime is 11000002261. The reversal of 11000002221 is 12220000011.

It can be written as a sum of positive squares in 2 ways, for example, as 3444046596 + 7555955625 = 58686^2 + 86925^2 .

It is not a de Polignac number, because 11000002221 - 2¹³ = 10999994029 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11000002261) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47008440 + ... + 47008673.

It is an arithmetic number, because the mean of its divisors is an integer number (1425926229).

Almost surely, 2^11000002221 is an apocalyptic number.

It is an amenable number.

11000002221 is a deficient number, since it is larger than the sum of its proper divisors (6111112527).

11000002221 is a wasteful number, since it uses less digits than its factorization.

11000002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94017132 (or 94017129 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 11000002221 its reverse (12220000011), we get a palindrome (23220002232).

The spelling of 11000002221 in words is "eleven billion, two thousand, two hundred twenty-one".