123525514352221 has 2 divisors, whose sum is σ = 123525514352222. Its totient is φ = 123525514352220.

The previous prime is 123525514352167. The next prime is 123525514352231. The reversal of 123525514352221 is 122253415525321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116257152272121 + 7268362080100 = 10782261^2 + 2695990^2 .

It is a cyclic number.

It is not a de Polignac number, because 123525514352221 - 2⁹ = 123525514351709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123525514352231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61762757176110 + 61762757176111.

It is an arithmetic number, because the mean of its divisors is an integer number (61762757176111).

Almost surely, 2^{123525514352221} is an apocalyptic number.

It is an amenable number.

123525514352221 is a deficient number, since it is larger than the sum of its proper divisors (1).

123525514352221 is an equidigital number, since it uses as much as digits as its factorization.

123525514352221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 720000, while the sum is 43.

Adding to 123525514352221 its reverse (122253415525321), we get a palindrome (245778929877542).

The spelling of 123525514352221 in words is "one hundred twenty-three trillion, five hundred twenty-five billion, five hundred fourteen million, three hundred fifty-two thousand, two hundred twenty-one".