121114520540 has 96 divisors (see below), whose sum is σ = 281470049280. Its totient is φ = 43485520896.

The previous prime is 121114520539. The next prime is 121114520543. The reversal of 121114520540 is 45025411121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121114520543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27693794 + ... + 27698166.

It is an arithmetic number, because the mean of its divisors is an integer number (2931979680).

Almost surely, 2^121114520540 is an apocalyptic number.

121114520540 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 121114520540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140735024640).

121114520540 is an abundant number, since it is smaller than the sum of its proper divisors (160355528740).

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

121114520540 is a wasteful number, since it uses less digits than its factorization.

121114520540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7311 (or 7309 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 26.

Adding to 121114520540 its reverse (45025411121), we get a palindrome (166139931661).

The spelling of 121114520540 in words is "one hundred twenty-one billion, one hundred fourteen million, five hundred twenty thousand, five hundred forty".