121340501544 has 32 divisors (see below), whose sum is σ = 304939491840. Its totient is φ = 40235068800.

The previous prime is 121340501501. The next prime is 121340501549. The reversal of 121340501544 is 445105043121.

121340501544 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (121340501549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13230637 + ... + 13239804.

It is an arithmetic number, because the mean of its divisors is an integer number (9529359120).

Almost surely, 2^121340501544 is an apocalyptic number.

It is an amenable number.

121340501544 is an abundant number, since it is smaller than the sum of its proper divisors (183598990296).

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

121340501544 is a wasteful number, since it uses less digits than its factorization.

121340501544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26470641 (or 26470637 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 121340501544 its reverse (445105043121), we get a palindrome (566445544665).

The spelling of 121340501544 in words is "one hundred twenty-one billion, three hundred forty million, five hundred one thousand, five hundred forty-four".