11121011200020 has 48 divisors (see below), whose sum is σ = 31203839439360. Its totient is φ = 2959411741056.

The previous prime is 11121011200007. The next prime is 11121011200043. The reversal of 11121011200020 is 2000211012111.

It is a super-2 number, since 2×11121011200020² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 11121011199969 and 11121011200005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193447447 + ... + 193504926.

It is an arithmetic number, because the mean of its divisors is an integer number (650079988320).

Almost surely, 2^{11121011200020} is an apocalyptic number.

11121011200020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11121011200020 is an abundant number, since it is smaller than the sum of its proper divisors (20082828239340).

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

11121011200020 is a wasteful number, since it uses less digits than its factorization.

11121011200020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386952864 (or 386952862 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 11121011200020 its reverse (2000211012111), we get a palindrome (13121222212131).

The spelling of 11121011200020 in words is "eleven trillion, one hundred twenty-one billion, eleven million, two hundred thousand, twenty".