11112112212020 has 24 divisors (see below), whose sum is σ = 23336343273768. Its totient is φ = 4444672003200.

The previous prime is 11112112212011. The next prime is 11112112212067. The reversal of 11112112212020 is 2021221121111.

It can be written as a sum of positive squares in 4 ways, for example, as 36568147984 + 11075544064036 = 191228^2 + 3327994^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 11112112212020.

It is a congruent number.

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, 10277411 + ... + 11307050.

It is an arithmetic number, because the mean of its divisors is an integer number (972347636407).

Almost surely, 2^{11112112212020} is an apocalyptic number.

11112112212020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11112112212020 is an abundant number, since it is smaller than the sum of its proper divisors (12224231061748).

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

11112112212020 is a wasteful number, since it uses less digits than its factorization.

11112112212020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21610211 (or 21610209 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 11112112212020 its reverse (2021221121111), we get a palindrome (13133333333131).

The spelling of 11112112212020 in words is "eleven trillion, one hundred twelve billion, one hundred twelve million, two hundred twelve thousand, twenty".