11221122020 has 72 divisors (see below), whose sum is σ = 24160840704. Its totient is φ = 4377360000.

The previous prime is 11221122013. The next prime is 11221122067. The reversal of 11221122020 is 2022112211.

It is a junction number, because it is equal to n+sod(n) for n = 11221121986 and 11221122004.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 9748445 + ... + 9749595.

It is an arithmetic number, because the mean of its divisors is an integer number (335567232).

Almost surely, 2^11221122020 is an apocalyptic number.

11221122020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11221122020 is an abundant number, since it is smaller than the sum of its proper divisors (12939718684).

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

11221122020 is a wasteful number, since it uses less digits than its factorization.

11221122020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1413 (or 1350 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 11221122020 its reverse (2022112211), we get a palindrome (13243234231).

The spelling of 11221122020 in words is "eleven billion, two hundred twenty-one million, one hundred twenty-two thousand, twenty".