403232421421121 has 2 divisors, whose sum is σ = 403232421421122. Its totient is φ = 403232421421120.

The previous prime is 403232421421111. The next prime is 403232421421127. The reversal of 403232421421121 is 121124124232304.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 217599671587600 + 185632749833521 = 14751260^2 + 13624711^2 .

It is a cyclic number.

It is not a de Polignac number, because 403232421421121 - 2⁶ = 403232421421057 is a prime.

It is not a weakly prime, because it can be changed into another prime (403232421421127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201616210710560 + 201616210710561.

It is an arithmetic number, because the mean of its divisors is an integer number (201616210710561).

Almost surely, 2^{403232421421121} is an apocalyptic number.

It is an amenable number.

403232421421121 is a deficient number, since it is larger than the sum of its proper divisors (1).

403232421421121 is an equidigital number, since it uses as much as digits as its factorization.

403232421421121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 32.

Adding to 403232421421121 its reverse (121124124232304), we get a palindrome (524356545653425).

The spelling of 403232421421121 in words is "four hundred three trillion, two hundred thirty-two billion, four hundred twenty-one million, four hundred twenty-one thousand, one hundred twenty-one".