111202121022020 has 24 divisors (see below), whose sum is σ = 266885090453184. Its totient is φ = 38126441493216.

The previous prime is 111202121021993. The next prime is 111202121022049. The reversal of 111202121022020 is 20220121202111.

It is a self number, because there is not a number n which added to its sum of digits gives 111202121022020.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 397150432082 + ... + 397150432361.

It is an arithmetic number, because the mean of its divisors is an integer number (11120212102216).

Almost surely, 2^{111202121022020} is an apocalyptic number.

111202121022020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111202121022020 is an abundant number, since it is smaller than the sum of its proper divisors (155682969431164).

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

111202121022020 is a wasteful number, since it uses less digits than its factorization.

111202121022020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794300864459 (or 794300864457 counting only the distinct ones).

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

Adding to 111202121022020 its reverse (20220121202111), we get a palindrome (131422242224131).

The spelling of 111202121022020 in words is "one hundred eleven trillion, two hundred two billion, one hundred twenty-one million, twenty-two thousand, twenty".