103421441021 has 2 divisors, whose sum is σ = 103421441022. Its totient is φ = 103421441020.

The previous prime is 103421440981. The next prime is 103421441063. The reversal of 103421441021 is 120144124301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87992323225 + 15429117796 = 296635^2 + 124214^2 .

It is a cyclic number.

It is not a de Polignac number, because 103421441021 - 2⁶ = 103421440957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103421440021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51710720510 + 51710720511.

It is an arithmetic number, because the mean of its divisors is an integer number (51710720511).

Almost surely, 2^103421441021 is an apocalyptic number.

It is an amenable number.

103421441021 is a deficient number, since it is larger than the sum of its proper divisors (1).

103421441021 is an equidigital number, since it uses as much as digits as its factorization.

103421441021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 103421441021 its reverse (120144124301), we get a palindrome (223565565322).

The spelling of 103421441021 in words is "one hundred three billion, four hundred twenty-one million, four hundred forty-one thousand, twenty-one".