121241041521 has 8 divisors (see below), whose sum is σ = 161825427744. Its totient is φ = 80742008160.

The previous prime is 121241041511. The next prime is 121241041529. The reversal of 121241041521 is 125140142121.

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

It is not a de Polignac number, because 121241041521 - 2⁵ = 121241041489 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121241041491 and 121241041500.

It is not an unprimeable number, because it can be changed into a prime (121241041529) 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, 21334900 + ... + 21340581.

It is an arithmetic number, because the mean of its divisors is an integer number (20228178468).

Almost surely, 2^121241041521 is an apocalyptic number.

It is an amenable number.

121241041521 is a deficient number, since it is larger than the sum of its proper divisors (40584386223).

121241041521 is an equidigital number, since it uses as much as digits as its factorization.

121241041521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42676431.

The product of its (nonzero) digits is 640, while the sum is 24.

Adding to 121241041521 its reverse (125140142121), we get a palindrome (246381183642).

The spelling of 121241041521 in words is "one hundred twenty-one billion, two hundred forty-one million, forty-one thousand, five hundred twenty-one".