121612443 has 8 divisors (see below), whose sum is σ = 162405456. Its totient is φ = 80947200.

The previous prime is 121612397. The next prime is 121612487. The reversal of 121612443 is 344216121.

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

It is a de Polignac number, because none of the positive numbers 2^k-121612443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121612943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29698 + ... + 33543.

It is an arithmetic number, because the mean of its divisors is an integer number (20300682).

Almost surely, 2^121612443 is an apocalyptic number.

121612443 is a deficient number, since it is larger than the sum of its proper divisors (40793013).

121612443 is an equidigital number, since it uses as much as digits as its factorization.

121612443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63885.

The product of its digits is 1152, while the sum is 24.

The square root of 121612443 is about 11027.8031810511. The cubic root of 121612443 is about 495.4418297747.

Adding to 121612443 its reverse (344216121), we get a palindrome (465828564).

The spelling of 121612443 in words is "one hundred twenty-one million, six hundred twelve thousand, four hundred forty-three".