121001342321 has 4 divisors (see below), whose sum is σ = 126262270272. Its totient is φ = 115740414372.

The previous prime is 121001342309. The next prime is 121001342327. The reversal of 121001342321 is 123243100121.

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 121001342321 - 2⁶ = 121001342257 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121001342293 and 121001342302.

It is not an unprimeable number, because it can be changed into a prime (121001342327) 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, 2630463941 + ... + 2630463986.

It is an arithmetic number, because the mean of its divisors is an integer number (31565567568).

Almost surely, 2^121001342321 is an apocalyptic number.

It is an amenable number.

121001342321 is a deficient number, since it is larger than the sum of its proper divisors (5260927951).

121001342321 is an equidigital number, since it uses as much as digits as its factorization.

121001342321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5260927950.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 121001342321 its reverse (123243100121), we get a palindrome (244244442442).

The spelling of 121001342321 in words is "one hundred twenty-one billion, one million, three hundred forty-two thousand, three hundred twenty-one".