103847221 has 2 divisors, whose sum is σ = 103847222. Its totient is φ = 103847220.

The previous prime is 103847213. The next prime is 103847239. The reversal of 103847221 is 122748301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81180100 + 22667121 = 9010^2 + 4761^2 .

It is a cyclic number.

It is not a de Polignac number, because 103847221 - 2³ = 103847213 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 103847221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103847201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51923610 + 51923611.

It is an arithmetic number, because the mean of its divisors is an integer number (51923611).

Almost surely, 2^103847221 is an apocalyptic number.

It is an amenable number.

103847221 is a deficient number, since it is larger than the sum of its proper divisors (1).

103847221 is an equidigital number, since it uses as much as digits as its factorization.

103847221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 103847221 is about 10190.5456674312. The cubic root of 103847221 is about 470.0365461245.

The spelling of 103847221 in words is "one hundred three million, eight hundred forty-seven thousand, two hundred twenty-one".