103225021 has 2 divisors, whose sum is σ = 103225022. Its totient is φ = 103225020.

The previous prime is 103225013. The next prime is 103225051. The reversal of 103225021 is 120522301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79459396 + 23765625 = 8914^2 + 4875^2 .

It is a cyclic number.

It is not a de Polignac number, because 103225021 - 2³ = 103225013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 103224986 and 103225004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103225051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51612510 + 51612511.

It is an arithmetic number, because the mean of its divisors is an integer number (51612511).

Almost surely, 2^103225021 is an apocalyptic number.

It is an amenable number.

103225021 is a deficient number, since it is larger than the sum of its proper divisors (1).

103225021 is an equidigital number, since it uses as much as digits as its factorization.

103225021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 103225021 is about 10159.9715058656. The cubic root of 103225021 is about 469.0959246602.

Adding to 103225021 its reverse (120522301), we get a palindrome (223747322).

The spelling of 103225021 in words is "one hundred three million, two hundred twenty-five thousand, twenty-one".