121120265028 has 96 divisors (see below), whose sum is σ = 326359756800. Its totient is φ = 34245265536.

The previous prime is 121120265011. The next prime is 121120265033. The reversal of 121120265028 is 820562021121.

It is a junction number, because it is equal to n+sod(n) for n = 121120264986 and 121120265004.

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, 7674001 + ... + 7689767.

It is an arithmetic number, because the mean of its divisors is an integer number (3399580800).

Almost surely, 2^121120265028 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121120265028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163179878400).

121120265028 is an abundant number, since it is smaller than the sum of its proper divisors (205239491772).

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

121120265028 is a wasteful number, since it uses less digits than its factorization.

121120265028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16729 (or 16727 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 30.

Adding to 121120265028 its reverse (820562021121), we get a palindrome (941682286149).

The spelling of 121120265028 in words is "one hundred twenty-one billion, one hundred twenty million, two hundred sixty-five thousand, twenty-eight".