11213371220 has 12 divisors (see below), whose sum is σ = 23548079604. Its totient is φ = 4485348480.

The previous prime is 11213371199. The next prime is 11213371223. The reversal of 11213371220 is 2217331211.

It can be written as a sum of positive squares in 2 ways, for example, as 7172734864 + 4040636356 = 84692^2 + 63566^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11213371223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 280334261 + ... + 280334300.

It is an arithmetic number, because the mean of its divisors is an integer number (1962339967).

Almost surely, 2^11213371220 is an apocalyptic number.

11213371220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11213371220 is an abundant number, since it is smaller than the sum of its proper divisors (12334708384).

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

11213371220 is a wasteful number, since it uses less digits than its factorization.

11213371220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560668570 (or 560668568 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 23.

The spelling of 11213371220 in words is "eleven billion, two hundred thirteen million, three hundred seventy-one thousand, two hundred twenty".