120421312123 has 8 divisors (see below), whose sum is σ = 137783835648. Its totient is φ = 103098658344.

The previous prime is 120421312111. The next prime is 120421312127. The reversal of 120421312123 is 321213124021.

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 120421312123 - 2⁵ = 120421312091 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120421312094 and 120421312103.

It is not an unprimeable number, because it can be changed into a prime (120421312127) 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, 9960961 + ... + 9973042.

It is an arithmetic number, because the mean of its divisors is an integer number (17222979456).

Almost surely, 2^120421312123 is an apocalyptic number.

120421312123 is a deficient number, since it is larger than the sum of its proper divisors (17362523525).

120421312123 is an equidigital number, since it uses as much as digits as its factorization.

120421312123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19934873.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 120421312123 its reverse (321213124021), we get a palindrome (441634436144).

The spelling of 120421312123 in words is "one hundred twenty billion, four hundred twenty-one million, three hundred twelve thousand, one hundred twenty-three".