11020221212 has 96 divisors (see below), whose sum is σ = 26786833920. Its totient is φ = 3826609920.

The previous prime is 11020221169. The next prime is 11020221239. The reversal of 11020221212 is 21212202011.

11020221212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×11020221212² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68663 + ... + 163569.

It is an arithmetic number, because the mean of its divisors is an integer number (279029520).

Almost surely, 2^11020221212 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 11020221212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13393416960).

11020221212 is an abundant number, since it is smaller than the sum of its proper divisors (15766612708).

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

11020221212 is a wasteful number, since it uses less digits than its factorization.

11020221212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94971 (or 94969 counting only the distinct ones).

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

Adding to 11020221212 its reverse (21212202011), we get a palindrome (32232423223).

It can be divided in two parts, 11020 and 221212, that added together give a palindrome (232232).

The spelling of 11020221212 in words is "eleven billion, twenty million, two hundred twenty-one thousand, two hundred twelve".