993214121 has 4 divisors (see below), whose sum is σ = 993325392. Its totient is φ = 993102852.

The previous prime is 993214093. The next prime is 993214163. The reversal of 993214121 is 121412399.

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: 121412399 = 31 ⋅3916529.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-993214121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (993214181) 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, 40955 + ... + 60528.

It is an arithmetic number, because the mean of its divisors is an integer number (248331348).

Almost surely, 2^993214121 is an apocalyptic number.

It is an amenable number.

993214121 is a deficient number, since it is larger than the sum of its proper divisors (111271).

993214121 is a wasteful number, since it uses less digits than its factorization.

993214121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111270.

The product of its digits is 3888, while the sum is 32.

The square root of 993214121 is about 31515.2997923231. The cubic root of 993214121 is about 997.7329044954.

The spelling of 993214121 in words is "nine hundred ninety-three million, two hundred fourteen thousand, one hundred twenty-one".