11110220212 has 72 divisors (see below), whose sum is σ = 24502095240. Its totient is φ = 4395081600.

The previous prime is 11110220183. The next prime is 11110220213. The reversal of 11110220212 is 21202201111.

It can be written as a sum of positive squares in 4 ways, for example, as 3296367396 + 7813852816 = 57414^2 + 88396^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 11110220192 and 11110220201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11110220213) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 417712 + ... + 443512.

Almost surely, 2^11110220212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11110220212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12251047620).

11110220212 is an abundant number, since it is smaller than the sum of its proper divisors (13391875028).

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

11110220212 is a wasteful number, since it uses less digits than its factorization.

11110220212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25858 (or 25823 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 11110220212 its reverse (21202201111), we get a palindrome (32312421323).

The spelling of 11110220212 in words is "eleven billion, one hundred ten million, two hundred twenty thousand, two hundred twelve".