111120202110020 has 48 divisors (see below), whose sum is σ = 247108067802288. Its totient is φ = 41828572692480.

The previous prime is 111120202110017. The next prime is 111120202110023. The reversal of 111120202110020 is 20011202021111.

It is an interprime number because it is at equal distance from previous prime (111120202110017) and next prime (111120202110023).

It can be written as a sum of positive squares in 8 ways, for example, as 7563039009604 + 103557163100416 = 2750098^2 + 10176304^2 .

It is a junction number, because it is equal to n+sod(n) for n = 111120202109977 and 111120202110004.

It is not an unprimeable number, because it can be changed into a prime (111120202110023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16301171 + ... + 22090010.

It is an arithmetic number, because the mean of its divisors is an integer number (5148084745881).

Almost surely, 2^{111120202110020} is an apocalyptic number.

111120202110020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111120202110020 is an abundant number, since it is smaller than the sum of its proper divisors (135987865692268).

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

111120202110020 is a wasteful number, since it uses less digits than its factorization.

111120202110020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38399720 (or 38399718 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 111120202110020 its reverse (20011202021111), we get a palindrome (131131404131131).

The spelling of 111120202110020 in words is "one hundred eleven trillion, one hundred twenty billion, two hundred two million, one hundred ten thousand, twenty".