11111020020000 has 240 divisors, whose sum is σ = 40495966267680. Its totient is φ = 2962938528000.

The previous prime is 11111020019993. The next prime is 11111020020029. The reversal of 11111020020000 is 2002011111.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (9).

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 39 ways as a sum of consecutive naturals, for example, 9747982 + ... + 10827981.

It is an arithmetic number, because the mean of its divisors is an integer number (168733192782).

Almost surely, 2^{11111020020000} is an apocalyptic number.

11111020020000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11111020020000 is an abundant number, since it is smaller than the sum of its proper divisors (29384946247680).

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

11111020020000 is an equidigital number, since it uses as much as digits as its factorization.

11111020020000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20576002 (or 20575973 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 11111020020000 its reverse (2002011111), we get a palindrome (11113022031111).

The spelling of 11111020020000 in words is "eleven trillion, one hundred eleven billion, twenty million, twenty thousand".