120111202020 has 96 divisors (see below), whose sum is σ = 339193774080. Its totient is φ = 31756095360.

The previous prime is 120111201967. The next prime is 120111202021. The reversal of 120111202020 is 20202111021.

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 = 120111201987 and 120111202005.

It is not an unprimeable number, because it can be changed into a prime (120111202021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4083165 + ... + 4112475.

It is an arithmetic number, because the mean of its divisors is an integer number (3533268480).

Almost surely, 2^120111202020 is an apocalyptic number.

120111202020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 120111202020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169596887040).

120111202020 is an abundant number, since it is smaller than the sum of its proper divisors (219082572060).

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

120111202020 is a wasteful number, since it uses less digits than its factorization.

120111202020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29905 (or 29903 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 120111202020 its reverse (20202111021), we get a palindrome (140313313041).

Subtracting from 120111202020 its reverse (20202111021), we obtain a palindrome (99909090999).

The spelling of 120111202020 in words is "one hundred twenty billion, one hundred eleven million, two hundred two thousand, twenty".