11220021118 has 16 divisors (see below), whose sum is σ = 17456046624. Its totient is φ = 5404341600.

The previous prime is 11220021103. The next prime is 11220021119. The reversal of 11220021118 is 81112002211.

It is a junction number, because it is equal to n+sod(n) for n = 11220021095 and 11220021104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11220021119) 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, 743130 + ... + 758077.

It is an arithmetic number, because the mean of its divisors is an integer number (1091002914).

Almost surely, 2^11220021118 is an apocalyptic number.

11220021118 is a deficient number, since it is larger than the sum of its proper divisors (6236025506).

11220021118 is a wasteful number, since it uses less digits than its factorization.

11220021118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1501347.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 11220021118 its reverse (81112002211), we get a palindrome (92332023329).

The spelling of 11220021118 in words is "eleven billion, two hundred twenty million, twenty-one thousand, one hundred eighteen".