115121121016 has 64 divisors (see below), whose sum is σ = 249495137280. Its totient is φ = 49216366080.

The previous prime is 115121120993. The next prime is 115121121023. The reversal of 115121121016 is 610121121511.

It is a Harshad number since it is a multiple of its sum of digits (22).

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, 2253145 + ... + 2303671.

It is an arithmetic number, because the mean of its divisors is an integer number (3898361520).

Almost surely, 2^115121121016 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 115121121016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124747568640).

115121121016 is an abundant number, since it is smaller than the sum of its proper divisors (134374016264).

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

115121121016 is a wasteful number, since it uses less digits than its factorization.

115121121016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52084 (or 52080 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 22.

Multiplying 115121121016 by its sum of digits (22), we get a palindrome (2532664662352).

Adding to 115121121016 its reverse (610121121511), we get a palindrome (725242242527).

The spelling of 115121121016 in words is "one hundred fifteen billion, one hundred twenty-one million, one hundred twenty-one thousand, sixteen".