2221847 has 2 divisors, whose sum is σ = 2221848. Its totient is φ = 2221846.

The previous prime is 2221837. The next prime is 2221859. The reversal of 2221847 is 7481222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2221847 - 2¹⁶ = 2156311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2221837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110923 + 1110924.

It is an arithmetic number, because the mean of its divisors is an integer number (1110924).

2^2221847 is an apocalyptic number.

2221847 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221847 is an equidigital number, since it uses as much as digits as its factorization.

2221847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1792, while the sum is 26.

The square root of 2221847 is about 1490.5861263275. The cubic root of 2221847 is about 130.4882428989.

The spelling of 2221847 in words is "two million, two hundred twenty-one thousand, eight hundred forty-seven".