11000001222 has 24 divisors (see below), whose sum is σ = 27238098576. Its totient is φ = 3142857456.

The previous prime is 11000001209. The next prime is 11000001239. The reversal of 11000001222 is 22210000011.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43650673 + ... + 43650924.

It is an arithmetic number, because the mean of its divisors is an integer number (1134920774).

Almost surely, 2^11000001222 is an apocalyptic number.

11000001222 is an abundant number, since it is smaller than the sum of its proper divisors (16238097354).

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

11000001222 is a wasteful number, since it uses less digits than its factorization.

11000001222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87301612 (or 87301609 counting only the distinct ones).

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

Adding to 11000001222 its reverse (22210000011), we get a palindrome (33210001233).

The spelling of 11000001222 in words is "eleven billion, one thousand, two hundred twenty-two".