11111202212020 has 12 divisors (see below), whose sum is σ = 23333524645284. Its totient is φ = 4444480884800.

The previous prime is 11111202212009. The next prime is 11111202212021. The reversal of 11111202212020 is 2021220211111.

It can be written as a sum of positive squares in 2 ways, for example, as 5446678451344 + 5664523760676 = 2333812^2 + 2380026^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11111202211985 and 11111202212003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111202212021) 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, 277780055281 + ... + 277780055320.

It is an arithmetic number, because the mean of its divisors is an integer number (1944460387107).

Almost surely, 2^{11111202212020} is an apocalyptic number.

11111202212020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11111202212020 is an abundant number, since it is smaller than the sum of its proper divisors (12222322433264).

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

11111202212020 is a wasteful number, since it uses less digits than its factorization.

11111202212020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555560110610 (or 555560110608 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 11111202212020 its reverse (2021220211111), we get a palindrome (13132422423131).

The spelling of 11111202212020 in words is "eleven trillion, one hundred eleven billion, two hundred two million, two hundred twelve thousand, twenty".