120005240120121 has 4 divisors (see below), whose sum is σ = 160006986826832. Its totient is φ = 80003493413412.

The previous prime is 120005240120119. The next prime is 120005240120137. The reversal of 120005240120121 is 121021042500021.

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 not a de Polignac number, because 120005240120121 - 2¹ = 120005240120119 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (120005240121121) 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, 20000873353351 + ... + 20000873353356.

It is an arithmetic number, because the mean of its divisors is an integer number (40001746706708).

Almost surely, 2^{120005240120121} is an apocalyptic number.

It is an amenable number.

120005240120121 is a deficient number, since it is larger than the sum of its proper divisors (40001746706711).

120005240120121 is an equidigital number, since it uses as much as digits as its factorization.

120005240120121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40001746706710.

The product of its (nonzero) digits is 320, while the sum is 21.

Adding to 120005240120121 its reverse (121021042500021), we get a palindrome (241026282620142).

The spelling of 120005240120121 in words is "one hundred twenty trillion, five billion, two hundred forty million, one hundred twenty thousand, one hundred twenty-one".