121544301541 has 16 divisors (see below), whose sum is σ = 133504882560. Its totient is φ = 109974997440.

The previous prime is 121544301517. The next prime is 121544301587. The reversal of 121544301541 is 145103445121.

It is a cyclic number.

It is not a de Polignac number, because 121544301541 - 2¹¹ = 121544299493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121544301341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 220911 + ... + 540268.

It is an arithmetic number, because the mean of its divisors is an integer number (8344055160).

Almost surely, 2^121544301541 is an apocalyptic number.

It is an amenable number.

121544301541 is a deficient number, since it is larger than the sum of its proper divisors (11960581019).

121544301541 is a wasteful number, since it uses less digits than its factorization.

121544301541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761436.

The product of its (nonzero) digits is 9600, while the sum is 31.

Adding to 121544301541 its reverse (145103445121), we get a palindrome (266647746662).

The spelling of 121544301541 in words is "one hundred twenty-one billion, five hundred forty-four million, three hundred one thousand, five hundred forty-one".