120421432011 has 4 divisors (see below), whose sum is σ = 160561909352. Its totient is φ = 80280954672.

The previous prime is 120421431887. The next prime is 120421432049. The reversal of 120421432011 is 110234124021.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 120421432011 - 2¹¹ = 120421429963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120421432081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20070238666 + ... + 20070238671.

It is an arithmetic number, because the mean of its divisors is an integer number (40140477338).

Almost surely, 2^120421432011 is an apocalyptic number.

120421432011 is a deficient number, since it is larger than the sum of its proper divisors (40140477341).

120421432011 is an equidigital number, since it uses as much as digits as its factorization.

120421432011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40140477340.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 120421432011 its reverse (110234124021), we get a palindrome (230655556032).

The spelling of 120421432011 in words is "one hundred twenty billion, four hundred twenty-one million, four hundred thirty-two thousand, eleven".