123120121020321 has 8 divisors (see below), whose sum is σ = 164985086795200. Its totient is φ = 81667617962832.

The previous prime is 123120121020293. The next prime is 123120121020359. The reversal of 123120121020321 is 123020121021321.

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

It is not a de Polignac number, because 123120121020321 - 2¹¹ = 123120121018273 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (123120121028321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103115678650 + ... + 103115679843.

It is an arithmetic number, because the mean of its divisors is an integer number (20623135849400).

Almost surely, 2^{123120121020321} is an apocalyptic number.

It is an amenable number.

123120121020321 is a deficient number, since it is larger than the sum of its proper divisors (41864965774879).

123120121020321 is a wasteful number, since it uses less digits than its factorization.

123120121020321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206231358695.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 123120121020321 its reverse (123020121021321), we get a palindrome (246140242041642).

The spelling of 123120121020321 in words is "one hundred twenty-three trillion, one hundred twenty billion, one hundred twenty-one million, twenty thousand, three hundred twenty-one".