121520512441 has 8 divisors (see below), whose sum is σ = 122525265600. Its totient is φ = 120518281968.

The previous prime is 121520512439. The next prime is 121520512541. The reversal of 121520512441 is 144215025121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121520512441 - 2¹ = 121520512439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121520512541) 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 7 ways as a sum of consecutive naturals, for example, 533871 + ... + 726676.

It is an arithmetic number, because the mean of its divisors is an integer number (15315658200).

Almost surely, 2^121520512441 is an apocalyptic number.

It is an amenable number.

121520512441 is a deficient number, since it is larger than the sum of its proper divisors (1004753159).

121520512441 is a wasteful number, since it uses less digits than its factorization.

121520512441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1261343.

The product of its (nonzero) digits is 3200, while the sum is 28.

Adding to 121520512441 its reverse (144215025121), we get a palindrome (265735537562).

The spelling of 121520512441 in words is "one hundred twenty-one billion, five hundred twenty million, five hundred twelve thousand, four hundred forty-one".