123405321000121 has 8 divisors (see below), whose sum is σ = 124963134024960. Its totient is φ = 121849198497552.

The previous prime is 123405321000103. The next prime is 123405321000133. The reversal of 123405321000121 is 121000123504321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123405321000121 - 2²⁷ = 123405186782393 is a prime.

It is a super-2 number, since 2×123405321000121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123405321003121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 422483650 + ... + 422775643.

It is an arithmetic number, because the mean of its divisors is an integer number (15620391753120).

Almost surely, 2^{123405321000121} is an apocalyptic number.

It is an amenable number.

123405321000121 is a deficient number, since it is larger than the sum of its proper divisors (1557813024839).

123405321000121 is an equidigital number, since it uses as much as digits as its factorization.

123405321000121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 845261135.

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 123405321000121 its reverse (121000123504321), we get a palindrome (244405444504442).

The spelling of 123405321000121 in words is "one hundred twenty-three trillion, four hundred five billion, three hundred twenty-one million, one hundred twenty-one", and thus it is an aban number.