120123242321021 has 2 divisors, whose sum is σ = 120123242321022. Its totient is φ = 120123242321020.

The previous prime is 120123242320909. The next prime is 120123242321023.

120123242321021 is nontrivially palindromic in base 10.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109095622663225 + 11027619657796 = 10444885^2 + 3320786^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 120123242321021 - 2³⁰ = 120122168579197 is a prime.

Together with 120123242321023, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120123242321023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60061621160510 + 60061621160511.

It is an arithmetic number, because the mean of its divisors is an integer number (60061621160511).

Almost surely, 2^{120123242321021} is an apocalyptic number.

It is an amenable number.

120123242321021 is a deficient number, since it is larger than the sum of its proper divisors (1).

120123242321021 is an equidigital number, since it uses as much as digits as its factorization.

120123242321021 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 26.

The spelling of 120123242321021 in words is "one hundred twenty trillion, one hundred twenty-three billion, two hundred forty-two million, three hundred twenty-one thousand, twenty-one".