11221211022020 has 24 divisors (see below), whose sum is σ = 23565323332824. Its totient is φ = 4488335801856.

The previous prime is 11221211021983. The next prime is 11221211022037. The reversal of 11221211022020 is 2022011212211.

It can be written as a sum of positive squares in 4 ways, for example, as 739558720576 + 10481652301444 = 859976^2 + 3237538^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 11221211022020.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8667749 + ... + 9877868.

It is an arithmetic number, because the mean of its divisors is an integer number (981888472201).

Almost surely, 2^{11221211022020} is an apocalyptic number.

11221211022020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11221211022020 is an abundant number, since it is smaller than the sum of its proper divisors (12344112310804).

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

11221211022020 is a wasteful number, since it uses less digits than its factorization.

11221211022020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18575879 (or 18575877 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 11221211022020 its reverse (2022011212211), we get a palindrome (13243222234231).

The spelling of 11221211022020 in words is "eleven trillion, two hundred twenty-one billion, two hundred eleven million, twenty-two thousand, twenty".