11220202120 has 16 divisors (see below), whose sum is σ = 25245454860. Its totient is φ = 4488080832.

The previous prime is 11220202117. The next prime is 11220202121. The reversal of 11220202120 is 2120202211.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11203375716 + 16826404 = 105846^2 + 4102^2 .

It is a super-2 number, since 2×11220202120² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11220202120.

It is not an unprimeable number, because it can be changed into a prime (11220202121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140252487 + ... + 140252566.

Almost surely, 2^11220202120 is an apocalyptic number.

11220202120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11220202120 is an abundant number, since it is smaller than the sum of its proper divisors (14025252740).

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

11220202120 is a wasteful number, since it uses less digits than its factorization.

11220202120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280505064 (or 280505060 counting only the distinct ones).

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

Adding to 11220202120 its reverse (2120202211), we get a palindrome (13340404331).

Subtracting from 11220202120 its reverse (2120202211), we obtain a palindrome (9099999909).

The spelling of 11220202120 in words is "eleven billion, two hundred twenty million, two hundred two thousand, one hundred twenty".