15121000241 has 4 divisors (see below), whose sum is σ = 15121616484. Its totient is φ = 15120384000.

The previous prime is 15121000207. The next prime is 15121000247. The reversal of 15121000241 is 14200012151.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11724558400 + 3396441841 = 108280^2 + 58279^2 .

It is a cyclic number.

It is not a de Polignac number, because 15121000241 - 2⁶ = 15121000177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15121000247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 269720 + ... + 320921.

It is an arithmetic number, because the mean of its divisors is an integer number (3780404121).

Almost surely, 2^15121000241 is an apocalyptic number.

It is an amenable number.

15121000241 is a deficient number, since it is larger than the sum of its proper divisors (616243).

15121000241 is an equidigital number, since it uses as much as digits as its factorization.

15121000241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616242.

The product of its (nonzero) digits is 80, while the sum is 17.

Adding to 15121000241 its reverse (14200012151), we get a palindrome (29321012392).

The spelling of 15121000241 in words is "fifteen billion, one hundred twenty-one million, two hundred forty-one", and thus it is an aban number.