120231430421 has 4 divisors (see below), whose sum is σ = 120259585344. Its totient is φ = 120203275500.

The previous prime is 120231430391. The next prime is 120231430441. The reversal of 120231430421 is 124034132021.

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, and also an emirpimes, since its reverse is a distinct semiprime: 124034132021 = 17 ⋅7296125413.

It is a cyclic number.

It is not a de Polignac number, because 120231430421 - 2⁶ = 120231430357 is a prime.

It is a super-2 number, since 2×120231430421² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120231430441) 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, 14071055 + ... + 14079596.

It is an arithmetic number, because the mean of its divisors is an integer number (30064896336).

Almost surely, 2^120231430421 is an apocalyptic number.

It is an amenable number.

120231430421 is a deficient number, since it is larger than the sum of its proper divisors (28154923).

120231430421 is an equidigital number, since it uses as much as digits as its factorization.

120231430421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28154922.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 120231430421 its reverse (124034132021), we get a palindrome (244265562442).

The spelling of 120231430421 in words is "one hundred twenty billion, two hundred thirty-one million, four hundred thirty thousand, four hundred twenty-one".