221232283 has 2 divisors, whose sum is σ = 221232284. Its totient is φ = 221232282.

The previous prime is 221232281. The next prime is 221232343. The reversal of 221232283 is 382232122.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221232283 - 2¹ = 221232281 is a prime.

Together with 221232281, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (221232281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110616141 + 110616142.

It is an arithmetic number, because the mean of its divisors is an integer number (110616142).

Almost surely, 2^221232283 is an apocalyptic number.

221232283 is a deficient number, since it is larger than the sum of its proper divisors (1).

221232283 is an equidigital number, since it uses as much as digits as its factorization.

221232283 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 25.

The square root of 221232283 is about 14873.8792182806. The cubic root of 221232283 is about 604.8061059331.

The spelling of 221232283 in words is "two hundred twenty-one million, two hundred thirty-two thousand, two hundred eighty-three".