121355330514 has 128 divisors (see below), whose sum is σ = 279536375808. Its totient is φ = 34763688960.

The previous prime is 121355330513. The next prime is 121355330533. The reversal of 121355330514 is 415033553121.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (121355330513) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 75988764 + ... + 75990360.

It is an arithmetic number, because the mean of its divisors is an integer number (2183877936).

Almost surely, 2^121355330514 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121355330514, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139768187904).

121355330514 is an abundant number, since it is smaller than the sum of its proper divisors (158181045294).

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

121355330514 is a wasteful number, since it uses less digits than its factorization.

121355330514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2192.

The product of its (nonzero) digits is 27000, while the sum is 33.

Adding to 121355330514 its reverse (415033553121), we get a palindrome (536388883635).

The spelling of 121355330514 in words is "one hundred twenty-one billion, three hundred fifty-five million, three hundred thirty thousand, five hundred fourteen".