103113221 has 2 divisors, whose sum is σ = 103113222. Its totient is φ = 103113220.

The previous prime is 103113203. The next prime is 103113233. The reversal of 103113221 is 122311301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73017025 + 30096196 = 8545^2 + 5486^2 .

It is a cyclic number.

It is not a de Polignac number, because 103113221 - 2²⁶ = 36004357 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 103113196 and 103113205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103113251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51556610 + 51556611.

It is an arithmetic number, because the mean of its divisors is an integer number (51556611).

Almost surely, 2^103113221 is an apocalyptic number.

It is an amenable number.

103113221 is a deficient number, since it is larger than the sum of its proper divisors (1).

103113221 is an equidigital number, since it uses as much as digits as its factorization.

103113221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 103113221 is about 10154.4680313643. The cubic root of 103113221 is about 468.9265087921.

Adding to 103113221 its reverse (122311301), we get a palindrome (225424522).

The spelling of 103113221 in words is "one hundred three million, one hundred thirteen thousand, two hundred twenty-one".