11112021001020 has 96 divisors (see below), whose sum is σ = 32855857332480. Its totient is φ = 2798278479360.

The previous prime is 11112021000989. The next prime is 11112021001069. The reversal of 11112021001020 is 2010012021111.

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 = 11112021000987 and 11112021001005.

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 31 ways as a sum of consecutive naturals, for example, 15214086 + ... + 15927725.

It is an arithmetic number, because the mean of its divisors is an integer number (342248513880).

Almost surely, 2^{11112021001020} is an apocalyptic number.

11112021001020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11112021001020 is an abundant number, since it is smaller than the sum of its proper divisors (21743836331460).

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

11112021001020 is a wasteful number, since it uses less digits than its factorization.

11112021001020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31142155 (or 31142153 counting only the distinct ones).

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

Adding to 11112021001020 its reverse (2010012021111), we get a palindrome (13122033022131).

The spelling of 11112021001020 in words is "eleven trillion, one hundred twelve billion, twenty-one million, one thousand, twenty".