103405225421 has 2 divisors, whose sum is σ = 103405225422. Its totient is φ = 103405225420.

The previous prime is 103405225409. The next prime is 103405225439. The reversal of 103405225421 is 124522504301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68243725225 + 35161500196 = 261235^2 + 187514^2 .

It is a cyclic number.

It is not a de Polignac number, because 103405225421 - 2³⁴ = 86225356237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103405225471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51702612710 + 51702612711.

It is an arithmetic number, because the mean of its divisors is an integer number (51702612711).

Almost surely, 2^103405225421 is an apocalyptic number.

It is an amenable number.

103405225421 is a deficient number, since it is larger than the sum of its proper divisors (1).

103405225421 is an equidigital number, since it uses as much as digits as its factorization.

103405225421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 103405225421 its reverse (124522504301), we get a palindrome (227927729722).

The spelling of 103405225421 in words is "one hundred three billion, four hundred five million, two hundred twenty-five thousand, four hundred twenty-one".