227220381 has 48 divisors (see below), whose sum is σ = 353808000. Its totient is φ = 140190336.

The previous prime is 227220379. The next prime is 227220397. The reversal of 227220381 is 183022722.

It is a happy number.

It is not a de Polignac number, because 227220381 - 2¹ = 227220379 is a prime.

It is a super-2 number, since 2×227220381² = 103258203083570322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (227220881) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1524895 + ... + 1525043.

It is an arithmetic number, because the mean of its divisors is an integer number (7371000).

Almost surely, 2^227220381 is an apocalyptic number.

It is an amenable number.

227220381 is a deficient number, since it is larger than the sum of its proper divisors (126587619).

227220381 is a wasteful number, since it uses less digits than its factorization.

227220381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370 (or 367 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 227220381 is about 15073.8309994507. The cubic root of 227220381 is about 610.2143661171.

The spelling of 227220381 in words is "two hundred twenty-seven million, two hundred twenty thousand, three hundred eighty-one".