121303120002001 has 4 divisors (see below), whose sum is σ = 138632137145152. Its totient is φ = 103974102858852.

The previous prime is 121303120001977. The next prime is 121303120002011. The reversal of 121303120002001 is 100200021303121.

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 121303120002001 - 2⁴⁵ = 86118747913169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121303120002011) 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, 8664508571565 + ... + 8664508571578.

It is an arithmetic number, because the mean of its divisors is an integer number (34658034286288).

Almost surely, 2^{121303120002001} is an apocalyptic number.

It is an amenable number.

121303120002001 is a deficient number, since it is larger than the sum of its proper divisors (17329017143151).

121303120002001 is an equidigital number, since it uses as much as digits as its factorization.

121303120002001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17329017143150.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 121303120002001 its reverse (100200021303121), we get a palindrome (221503141305122).

The spelling of 121303120002001 in words is "one hundred twenty-one trillion, three hundred three billion, one hundred twenty million, two thousand, one".