123354202214521 has 4 divisors (see below), whose sum is σ = 124325495145472. Its totient is φ = 122382909283572.

The previous prime is 123354202214447. The next prime is 123354202214533. The reversal of 123354202214521 is 125412202453321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 123354202214521 - 2⁷ = 123354202214393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123354202214591) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 485646465285 + ... + 485646465538.

It is an arithmetic number, because the mean of its divisors is an integer number (31081373786368).

Almost surely, 2^{123354202214521} is an apocalyptic number.

It is an amenable number.

123354202214521 is a deficient number, since it is larger than the sum of its proper divisors (971292930951).

123354202214521 is an equidigital number, since it uses as much as digits as its factorization.

123354202214521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 971292930950.

The product of its (nonzero) digits is 115200, while the sum is 37.

Adding to 123354202214521 its reverse (125412202453321), we get a palindrome (248766404667842).

The spelling of 123354202214521 in words is "one hundred twenty-three trillion, three hundred fifty-four billion, two hundred two million, two hundred fourteen thousand, five hundred twenty-one".