121443215 has 8 divisors (see below), whose sum is σ = 146013648. Its totient is φ = 96966720.

The previous prime is 121443209. The next prime is 121443227. The reversal of 121443215 is 512344121.

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

It is not a de Polignac number, because 121443215 - 2⁴ = 121443199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20606 + ... + 25835.

It is an arithmetic number, because the mean of its divisors is an integer number (18251706).

Almost surely, 2^121443215 is an apocalyptic number.

121443215 is a deficient number, since it is larger than the sum of its proper divisors (24570433).

121443215 is an equidigital number, since it uses as much as digits as its factorization.

121443215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46969.

The product of its digits is 960, while the sum is 23.

The square root of 121443215 is about 11020.1277215829. The cubic root of 121443215 is about 495.2119148417.

Adding to 121443215 its reverse (512344121), we get a palindrome (633787336).

The spelling of 121443215 in words is "one hundred twenty-one million, four hundred forty-three thousand, two hundred fifteen".