111012111020020 has 24 divisors (see below), whose sum is σ = 266429066448384. Its totient is φ = 38061295206816.

The previous prime is 111012111020017. The next prime is 111012111020047. The reversal of 111012111020020 is 20020111210111.

It is a happy number.

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, 396471824932 + ... + 396471825211.

It is an arithmetic number, because the mean of its divisors is an integer number (11101211102016).

Almost surely, 2^{111012111020020} is an apocalyptic number.

111012111020020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111012111020020 is an abundant number, since it is smaller than the sum of its proper divisors (155416955428364).

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

111012111020020 is a wasteful number, since it uses less digits than its factorization.

111012111020020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792943650159 (or 792943650157 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 111012111020020 its reverse (20020111210111), we get a palindrome (131032222230131).

The spelling of 111012111020020 in words is "one hundred eleven trillion, twelve billion, one hundred eleven million, twenty thousand, twenty".