10121120112120 has 128 divisors (see below), whose sum is σ = 30889585958400. Its totient is φ = 2652224103936.

The previous prime is 10121120112107. The next prime is 10121120112151. The reversal of 10121120112120 is 2121102112101.

It is a happy number.

It is a super-3 number, since 3×10121120112120³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 10121120112120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18686157 + ... + 19220163.

It is an arithmetic number, because the mean of its divisors is an integer number (241324890300).

Almost surely, 2^{10121120112120} is an apocalyptic number.

10121120112120 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 10121120112120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15444792979200).

10121120112120 is an abundant number, since it is smaller than the sum of its proper divisors (20768465846280).

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

10121120112120 is a wasteful number, since it uses less digits than its factorization.

10121120112120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536757 (or 536753 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 10121120112120 its reverse (2121102112101), we get a palindrome (12242222224221).

The spelling of 10121120112120 in words is "ten trillion, one hundred twenty-one billion, one hundred twenty million, one hundred twelve thousand, one hundred twenty".