227136121 has 4 divisors (see below), whose sum is σ = 227166352. Its totient is φ = 227105892.

The previous prime is 227136067. The next prime is 227136131. The reversal of 227136121 is 121631722.

It is a happy number.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 121631722 = 2 ⋅60815861.

It is a cyclic number.

It is not a de Polignac number, because 227136121 - 2⁹ = 227135609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (227136131) 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, 5830 + ... + 22096.

It is an arithmetic number, because the mean of its divisors is an integer number (56791588).

Almost surely, 2^227136121 is an apocalyptic number.

It is an amenable number.

227136121 is a deficient number, since it is larger than the sum of its proper divisors (30231).

227136121 is a wasteful number, since it uses less digits than its factorization.

227136121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30230.

The product of its digits is 1008, while the sum is 25.

The square root of 227136121 is about 15071.0358303602. The cubic root of 227136121 is about 610.1389283135.

Adding to 227136121 its reverse (121631722), we get a palindrome (348767843).

The spelling of 227136121 in words is "two hundred twenty-seven million, one hundred thirty-six thousand, one hundred twenty-one".