227143121 has 4 divisors (see below), whose sum is σ = 228332544. Its totient is φ = 225953700.

The previous prime is 227143099. The next prime is 227143141. The reversal of 227143121 is 121341722.

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 a cyclic number.

It is not a de Polignac number, because 227143121 - 2¹⁴ = 227126737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (227143141) 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, 594425 + ... + 594806.

It is an arithmetic number, because the mean of its divisors is an integer number (57083136).

Almost surely, 2^227143121 is an apocalyptic number.

It is an amenable number.

227143121 is a deficient number, since it is larger than the sum of its proper divisors (1189423).

227143121 is a wasteful number, since it uses less digits than its factorization.

227143121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1189422.

The product of its digits is 672, while the sum is 23.

The square root of 227143121 is about 15071.2680621108. The cubic root of 227143121 is about 610.1451961095.

Adding to 227143121 its reverse (121341722), we get a palindrome (348484843).

The spelling of 227143121 in words is "two hundred twenty-seven million, one hundred forty-three thousand, one hundred twenty-one".