103522421 has 2 divisors, whose sum is σ = 103522422. Its totient is φ = 103522420.

The previous prime is 103522343. The next prime is 103522451. The reversal of 103522421 is 124225301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52041796 + 51480625 = 7214^2 + 7175^2 .

It is an emirp because it is prime and its reverse (124225301) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 103522421 - 2¹⁸ = 103260277 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 103522393 and 103522402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103522451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51761210 + 51761211.

It is an arithmetic number, because the mean of its divisors is an integer number (51761211).

Almost surely, 2^103522421 is an apocalyptic number.

It is an amenable number.

103522421 is a deficient number, since it is larger than the sum of its proper divisors (1).

103522421 is an equidigital number, since it uses as much as digits as its factorization.

103522421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 103522421 is about 10174.5968470500. The cubic root of 103522421 is about 469.5459943606.

Adding to 103522421 its reverse (124225301), we get a palindrome (227747722).

The spelling of 103522421 in words is "one hundred three million, five hundred twenty-two thousand, four hundred twenty-one".