120021121110 has 128 divisors (see below), whose sum is σ = 319835174400. Its totient is φ = 28578539520.

The previous prime is 120021121067. The next prime is 120021121111. The reversal of 120021121110 is 11121120021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120021121111) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 34596456 + ... + 34599924.

It is an arithmetic number, because the mean of its divisors is an integer number (2498712300).

Almost surely, 2^120021121110 is an apocalyptic number.

120021121110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 120021121110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159917587200).

120021121110 is an abundant number, since it is smaller than the sum of its proper divisors (199814053290).

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

120021121110 is a wasteful number, since it uses less digits than its factorization.

120021121110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5326.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 120021121110 its reverse (11121120021), we get a palindrome (131142241131).

The spelling of 120021121110 in words is "one hundred twenty billion, twenty-one million, one hundred twenty-one thousand, one hundred ten".