123225030421 has 2 divisors, whose sum is σ = 123225030422. Its totient is φ = 123225030420.

The previous prime is 123225030403. The next prime is 123225030463. The reversal of 123225030421 is 124030522321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78912675396 + 44312355025 = 280914^2 + 210505^2 .

It is a cyclic number.

It is not a de Polignac number, because 123225030421 - 2⁷ = 123225030293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123225030221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61612515210 + 61612515211.

It is an arithmetic number, because the mean of its divisors is an integer number (61612515211).

Almost surely, 2^123225030421 is an apocalyptic number.

It is an amenable number.

123225030421 is a deficient number, since it is larger than the sum of its proper divisors (1).

123225030421 is an equidigital number, since it uses as much as digits as its factorization.

123225030421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 123225030421 its reverse (124030522321), we get a palindrome (247255552742).

The spelling of 123225030421 in words is "one hundred twenty-three billion, two hundred twenty-five million, thirty thousand, four hundred twenty-one".