11220212020 has 12 divisors (see below), whose sum is σ = 23562445284. Its totient is φ = 4488084800.

The previous prime is 11220211997. The next prime is 11220212023. The reversal of 11220212020 is 2021202211.

It is a happy number.

11220212020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 4371325456 + 6848886564 = 66116^2 + 82758^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11220212023) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 280505281 + ... + 280505320.

It is an arithmetic number, because the mean of its divisors is an integer number (1963537107).

Almost surely, 2^11220212020 is an apocalyptic number.

11220212020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11220212020 is an abundant number, since it is smaller than the sum of its proper divisors (12342233264).

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

11220212020 is a wasteful number, since it uses less digits than its factorization.

11220212020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561010610 (or 561010608 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 11220212020 its reverse (2021202211), we get a palindrome (13241414231).

The spelling of 11220212020 in words is "eleven billion, two hundred twenty million, two hundred twelve thousand, twenty".