11221222011 has 8 divisors (see below), whose sum is σ = 15841725264. Its totient is φ = 7040766720.

The previous prime is 11221222007. The next prime is 11221222021. The reversal of 11221222011 is 11022212211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11221222011 - 2² = 11221222007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11221222021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110011930 + ... + 110012031.

It is an arithmetic number, because the mean of its divisors is an integer number (1980215658).

Almost surely, 2^11221222011 is an apocalyptic number.

11221222011 is a deficient number, since it is larger than the sum of its proper divisors (4620503253).

11221222011 is a wasteful number, since it uses less digits than its factorization.

11221222011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220023981.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 11221222011 its reverse (11022212211), we get a palindrome (22243434222).

The spelling of 11221222011 in words is "eleven billion, two hundred twenty-one million, two hundred twenty-two thousand, eleven".