121220122001120 has 96 divisors (see below), whose sum is σ = 287210260481760. Its totient is φ = 48347921121280.

The previous prime is 121220122001117. The next prime is 121220122001129. The reversal of 121220122001120 is 21100221022121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121220122001129) 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, 1191055835 + ... + 1191157605.

It is an arithmetic number, because the mean of its divisors is an integer number (2991773546685).

Almost surely, 2^{121220122001120} is an apocalyptic number.

121220122001120 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 121220122001120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143605130240880).

121220122001120 is an abundant number, since it is smaller than the sum of its proper divisors (165990138480640).

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

121220122001120 is a wasteful number, since it uses less digits than its factorization.

121220122001120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123228 (or 123220 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 121220122001120 its reverse (21100221022121), we get a palindrome (142320343023241).

The spelling of 121220122001120 in words is "one hundred twenty-one trillion, two hundred twenty billion, one hundred twenty-two million, one thousand, one hundred twenty".