221414047 has 2 divisors, whose sum is σ = 221414048. Its totient is φ = 221414046.

The previous prime is 221414033. The next prime is 221414051. The reversal of 221414047 is 740414122.

221414047 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221414047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221414027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110707023 + 110707024.

It is an arithmetic number, because the mean of its divisors is an integer number (110707024).

Almost surely, 2^221414047 is an apocalyptic number.

221414047 is a deficient number, since it is larger than the sum of its proper divisors (1).

221414047 is an equidigital number, since it uses as much as digits as its factorization.

221414047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 221414047 is about 14879.9881384361. The cubic root of 221414047 is about 604.9716964197.

Adding to 221414047 its reverse (740414122), we get a palindrome (961828169).

It can be divided in two parts, 2214 and 14047, that added together give a palindrome (16261).

The spelling of 221414047 in words is "two hundred twenty-one million, four hundred fourteen thousand, forty-seven".