281068121 has 4 divisors (see below), whose sum is σ = 295861200. Its totient is φ = 266275044.

The previous prime is 281068111. The next prime is 281068187. The reversal of 281068121 is 121860182.

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.

It is not a de Polignac number, because 281068121 - 2⁶ = 281068057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (281068111) 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, 7396511 + ... + 7396548.

It is an arithmetic number, because the mean of its divisors is an integer number (73965300).

Almost surely, 2^281068121 is an apocalyptic number.

It is an amenable number.

281068121 is a deficient number, since it is larger than the sum of its proper divisors (14793079).

281068121 is a wasteful number, since it uses less digits than its factorization.

281068121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14793078.

The product of its (nonzero) digits is 1536, while the sum is 29.

The square root of 281068121 is about 16765.0863701921. The cubic root of 281068121 is about 655.0440861494.

The spelling of 281068121 in words is "two hundred eighty-one million, sixty-eight thousand, one hundred twenty-one".