121004513 has 4 divisors (see below), whose sum is σ = 138290880. Its totient is φ = 103718148.

The previous prime is 121004447. The next prime is 121004551. The reversal of 121004513 is 315400121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 315400121 = 1279 ⋅246599.

It is a cyclic number.

It is not a de Polignac number, because 121004513 - 2¹⁰ = 121003489 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121004491 and 121004500.

It is not an unprimeable number, because it can be changed into a prime (121004593) 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, 8643173 + ... + 8643186.

It is an arithmetic number, because the mean of its divisors is an integer number (34572720).

Almost surely, 2^121004513 is an apocalyptic number.

It is an amenable number.

121004513 is a deficient number, since it is larger than the sum of its proper divisors (17286367).

121004513 is an equidigital number, since it uses as much as digits as its factorization.

121004513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17286366.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 121004513 is about 11000.2051344509. The cubic root of 121004513 is about 494.6148934750.

Adding to 121004513 its reverse (315400121), we get a palindrome (436404634).

The spelling of 121004513 in words is "one hundred twenty-one million, four thousand, five hundred thirteen".