120231434221 has 4 divisors (see below), whose sum is σ = 122269255200. Its totient is φ = 118193613244.

The previous prime is 120231434189. The next prime is 120231434227. The reversal of 120231434221 is 122434132021.

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: 122434132021 = 219187 ⋅558583.

It is a cyclic number.

It is not a de Polignac number, because 120231434221 - 2⁵ = 120231434189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120231434227) 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, 1018910401 + ... + 1018910518.

It is an arithmetic number, because the mean of its divisors is an integer number (30567313800).

Almost surely, 2^120231434221 is an apocalyptic number.

It is an amenable number.

120231434221 is a deficient number, since it is larger than the sum of its proper divisors (2037820979).

120231434221 is an equidigital number, since it uses as much as digits as its factorization.

120231434221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2037820978.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 120231434221 its reverse (122434132021), we get a palindrome (242665566242).

The spelling of 120231434221 in words is "one hundred twenty billion, two hundred thirty-one million, four hundred thirty-four thousand, two hundred twenty-one".