11201222020 has 12 divisors (see below), whose sum is σ = 23522566284. Its totient is φ = 4480488800.

The previous prime is 11201221883. The next prime is 11201222023. The reversal of 11201222020 is 2022210211.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1906719556 + 9294502464 = 43666^2 + 96408^2 .

It is not an unprimeable number, because it can be changed into a prime (11201222023) 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, 280030531 + ... + 280030570.

It is an arithmetic number, because the mean of its divisors is an integer number (1960213857).

Almost surely, 2^11201222020 is an apocalyptic number.

11201222020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11201222020 is an abundant number, since it is smaller than the sum of its proper divisors (12321344264).

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

11201222020 is a wasteful number, since it uses less digits than its factorization.

11201222020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560061110 (or 560061108 counting only the distinct ones).

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

Adding to 11201222020 its reverse (2022210211), we get a palindrome (13223432231).

The spelling of 11201222020 in words is "eleven billion, two hundred one million, two hundred twenty-two thousand, twenty".