11022022221 has 12 divisors (see below), whose sum is σ = 17095381632. Its totient is φ = 6298298328.

The previous prime is 11022022183. The next prime is 11022022237. The reversal of 11022022221 is 12222022011.

It is not a de Polignac number, because 11022022221 - 2¹¹ = 11022020173 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11022022221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11022022261) 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, 37489725 + ... + 37490018.

It is an arithmetic number, because the mean of its divisors is an integer number (1424615136).

Almost surely, 2^11022022221 is an apocalyptic number.

It is an amenable number.

11022022221 is a deficient number, since it is larger than the sum of its proper divisors (6073359411).

11022022221 is an equidigital number, since it uses as much as digits as its factorization.

11022022221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74979760 (or 74979753 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 11022022221 its reverse (12222022011), we get a palindrome (23244044232).

The spelling of 11022022221 in words is "eleven billion, twenty-two million, twenty-two thousand, two hundred twenty-one".