11121210201020 has 96 divisors (see below), whose sum is σ = 23799762911232. Its totient is φ = 4364726784768.

The previous prime is 11121210201011. The next prime is 11121210201043. The reversal of 11121210201020 is 2010201212111.

It is a junction number, because it is equal to n+sod(n) for n = 11121210200986 and 11121210201004.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 83496917 + ... + 83630003.

It is an arithmetic number, because the mean of its divisors is an integer number (247914196992).

Almost surely, 2^{11121210201020} is an apocalyptic number.

11121210201020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11121210201020 is an abundant number, since it is smaller than the sum of its proper divisors (12678552710212).

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

11121210201020 is a wasteful number, since it uses less digits than its factorization.

11121210201020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133587 (or 133585 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11121210201020 its reverse (2010201212111), we get a palindrome (13131411413131).

The spelling of 11121210201020 in words is "eleven trillion, one hundred twenty-one billion, two hundred ten million, two hundred one thousand, twenty".