111001110001020 has 96 divisors (see below), whose sum is σ = 351189952646400. Its totient is φ = 29098596059712.

The previous prime is 111001110001013. The next prime is 111001110001057. The reversal of 111001110001020 is 20100011100111.

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

It is a junction number, because it is equal to n+sod(n) for n = 111001110000993 and 111001110001011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1741981794 + ... + 1742045513.

It is an arithmetic number, because the mean of its divisors is an integer number (3658228673400).

Almost surely, 2^{111001110001020} is an apocalyptic number.

111001110001020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111001110001020 is an abundant number, since it is smaller than the sum of its proper divisors (240188842645380).

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

111001110001020 is a wasteful number, since it uses less digits than its factorization.

111001110001020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3484027384 (or 3484027376 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 111001110001020 its reverse (20100011100111), we get a palindrome (131101121101131).

The spelling of 111001110001020 in words is "one hundred eleven trillion, one billion, one hundred ten million, one thousand, twenty".