11102212220 has 72 divisors (see below), whose sum is σ = 26009711952. Its totient is φ = 3976853760.

The previous prime is 11102212181. The next prime is 11102212313. The reversal of 11102212220 is 2221220111.

It is a junction number, because it is equal to n+sod(n) for n = 11102212195 and 11102212204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 127904 + ... + 196376.

Almost surely, 2^11102212220 is an apocalyptic number.

11102212220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11102212220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13004855976).

11102212220 is an abundant number, since it is smaller than the sum of its proper divisors (14907499732).

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

11102212220 is a wasteful number, since it uses less digits than its factorization.

11102212220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68571 (or 68558 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 11102212220 its reverse (2221220111), we get a palindrome (13323432331).

It can be divided in two parts, 11102 and 212220, that added together give a palindrome (223322).

The spelling of 11102212220 in words is "eleven billion, one hundred two million, two hundred twelve thousand, two hundred twenty".