120134431021 has 4 divisors (see below), whose sum is σ = 131055742944. Its totient is φ = 109213119100.

The previous prime is 120134431007. The next prime is 120134431061.

120134431021 is nontrivially palindromic in base 10.

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.

It is a cyclic number.

It is not a de Polignac number, because 120134431021 - 2¹⁹ = 120133906733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120134430983 and 120134431001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120134431061) 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, 5460655945 + ... + 5460655966.

It is an arithmetic number, because the mean of its divisors is an integer number (32763935736).

Almost surely, 2^120134431021 is an apocalyptic number.

120134431021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

120134431021 is a deficient number, since it is larger than the sum of its proper divisors (10921311923).

120134431021 is a wasteful number, since it uses less digits than its factorization.

120134431021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10921311922.

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

It can be divided in two parts, 120134 and 431021, that added together give a palindrome (551155).

The spelling of 120134431021 in words is "one hundred twenty billion, one hundred thirty-four million, four hundred thirty-one thousand, twenty-one".