123241403221 has 2 divisors, whose sum is σ = 123241403222. Its totient is φ = 123241403220.

The previous prime is 123241403209. The next prime is 123241403281. The reversal of 123241403221 is 122304142321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112972620996 + 10268782225 = 336114^2 + 101335^2 .

It is a cyclic number.

It is not a de Polignac number, because 123241403221 - 2¹⁵ = 123241370453 is a prime.

It is a super-2 number, since 2×123241403221² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123241403281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61620701610 + 61620701611.

It is an arithmetic number, because the mean of its divisors is an integer number (61620701611).

Almost surely, 2^123241403221 is an apocalyptic number.

It is an amenable number.

123241403221 is a deficient number, since it is larger than the sum of its proper divisors (1).

123241403221 is an equidigital number, since it uses as much as digits as its factorization.

123241403221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 123241403221 its reverse (122304142321), we get a palindrome (245545545542).

The spelling of 123241403221 in words is "one hundred twenty-three billion, two hundred forty-one million, four hundred three thousand, two hundred twenty-one".