120000121321 has 4 divisors (see below), whose sum is σ = 126315917200. Its totient is φ = 113684325444.

The previous prime is 120000121309. The next prime is 120000121343. The reversal of 120000121321 is 123121000021.

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: 123121000021 = 82171 ⋅1498351.

It is a cyclic number.

It is not a de Polignac number, because 120000121321 - 2²¹ = 119998024169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120000191321) 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, 3157897911 + ... + 3157897948.

It is an arithmetic number, because the mean of its divisors is an integer number (31578979300).

Almost surely, 2^120000121321 is an apocalyptic number.

It is an amenable number.

120000121321 is a deficient number, since it is larger than the sum of its proper divisors (6315795879).

120000121321 is an equidigital number, since it uses as much as digits as its factorization.

120000121321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6315795878.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 120000121321 its reverse (123121000021), we get a palindrome (243121121342).

The spelling of 120000121321 in words is "one hundred twenty billion, one hundred twenty-one thousand, three hundred twenty-one".