11231222020 has 24 divisors (see below), whose sum is σ = 23589244224. Its totient is φ = 4491788256.

The previous prime is 11231221999. The next prime is 11231222033. The reversal of 11231222020 is 2022213211.

It is a happy number.

11231222020 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 2×11231222020² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11231221985 and 11231222003.

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 7 ways as a sum of consecutive naturals, for example, 99039 + ... + 179641.

It is an arithmetic number, because the mean of its divisors is an integer number (982885176).

Almost surely, 2^11231222020 is an apocalyptic number.

11231222020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11231222020 is an abundant number, since it is smaller than the sum of its proper divisors (12358022204).

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

11231222020 is a wasteful number, since it uses less digits than its factorization.

11231222020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87579 (or 87577 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 11231222020 its reverse (2022213211), we get a palindrome (13253435231).

The spelling of 11231222020 in words is "eleven billion, two hundred thirty-one million, two hundred twenty-two thousand, twenty".