20110120120 has 64 divisors (see below), whose sum is σ = 46704888000. Its totient is φ = 7787197440.

The previous prime is 20110120091. The next prime is 20110120133. The reversal of 20110120120 is 2102101102.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 20110120097 and 20110120106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 260380 + ... + 328660.

It is an arithmetic number, because the mean of its divisors is an integer number (729763875).

Almost surely, 2^20110120120 is an apocalyptic number.

20110120120 is a gapful number since it is divisible by the number (20) 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 20110120120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23352444000).

20110120120 is an abundant number, since it is smaller than the sum of its proper divisors (26594767880).

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

20110120120 is a wasteful number, since it uses less digits than its factorization.

20110120120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68528 (or 68524 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20110120120 its reverse (2102101102), we get a palindrome (22212221222).

The spelling of 20110120120 in words is "twenty billion, one hundred ten million, one hundred twenty thousand, one hundred twenty".