224221139 has 2 divisors, whose sum is σ = 224221140. Its totient is φ = 224221138.

The previous prime is 224221133. The next prime is 224221157. The reversal of 224221139 is 931122422.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 224221139 - 2⁸ = 224220883 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (224221133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112110569 + 112110570.

It is an arithmetic number, because the mean of its divisors is an integer number (112110570).

Almost surely, 2^224221139 is an apocalyptic number.

224221139 is a deficient number, since it is larger than the sum of its proper divisors (1).

224221139 is an equidigital number, since it uses as much as digits as its factorization.

224221139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 26.

The square root of 224221139 is about 14974.0154601229. The cubic root of 224221139 is about 607.5175822896.

The spelling of 224221139 in words is "two hundred twenty-four million, two hundred twenty-one thousand, one hundred thirty-nine".