123432003221 has 2 divisors, whose sum is σ = 123432003222. Its totient is φ = 123432003220.

The previous prime is 123432003203. The next prime is 123432003283. The reversal of 123432003221 is 122300234321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122482500625 + 949502596 = 349975^2 + 30814^2 .

It is a cyclic number.

It is not a de Polignac number, because 123432003221 - 2⁶ = 123432003157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123432000221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61716001610 + 61716001611.

It is an arithmetic number, because the mean of its divisors is an integer number (61716001611).

Almost surely, 2^123432003221 is an apocalyptic number.

It is an amenable number.

123432003221 is a deficient number, since it is larger than the sum of its proper divisors (1).

123432003221 is an equidigital number, since it uses as much as digits as its factorization.

123432003221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 123432003221 its reverse (122300234321), we get a palindrome (245732237542).

The spelling of 123432003221 in words is "one hundred twenty-three billion, four hundred thirty-two million, three thousand, two hundred twenty-one".