111011101020020 has 24 divisors (see below), whose sum is σ = 236074240147200. Its totient is φ = 43842358883232.

The previous prime is 111011101019971. The next prime is 111011101020031. The reversal of 111011101020020 is 20020101110111.

It is a junction number, because it is equal to n+sod(n) for n = 111011101019983 and 111011101020010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35130093680 + ... + 35130096839.

It is an arithmetic number, because the mean of its divisors is an integer number (9836426672800).

Almost surely, 2^{111011101020020} is an apocalyptic number.

111011101020020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111011101020020 is an abundant number, since it is smaller than the sum of its proper divisors (125063139127180).

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

111011101020020 is a wasteful number, since it uses less digits than its factorization.

111011101020020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70260190607 (or 70260190605 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 111011101020020 its reverse (20020101110111), we get a palindrome (131031202130131).

Subtracting from 111011101020020 its reverse (20020101110111), we obtain a palindrome (90990999909909).

The spelling of 111011101020020 in words is "one hundred eleven trillion, eleven billion, one hundred one million, twenty thousand, twenty".