1121424215 has 4 divisors (see below), whose sum is σ = 1345709064. Its totient is φ = 897139368.

The previous prime is 1121424211. The next prime is 1121424223. The reversal of 1121424215 is 5124241211.

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

It is a cyclic number.

It is not a de Polignac number, because 1121424215 - 2² = 1121424211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121424211) 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 3 ways as a sum of consecutive naturals, for example, 112142417 + ... + 112142426.

It is an arithmetic number, because the mean of its divisors is an integer number (336427266).

Almost surely, 2^1121424215 is an apocalyptic number.

1121424215 is a deficient number, since it is larger than the sum of its proper divisors (224284849).

1121424215 is an equidigital number, since it uses as much as digits as its factorization.

1121424215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224284848.

The product of its digits is 640, while the sum is 23.

The square root of 1121424215 is about 33487.6725826087. The cubic root of 1121424215 is about 1038.9388260582.

Adding to 1121424215 its reverse (5124241211), we get a palindrome (6245665426).

The spelling of 1121424215 in words is "one billion, one hundred twenty-one million, four hundred twenty-four thousand, two hundred fifteen".