320001001302121 has 4 divisors (see below), whose sum is σ = 320533448892244. Its totient is φ = 319468553712000.

The previous prime is 320001001302071. The next prime is 320001001302179. The reversal of 320001001302121 is 121203100100023.

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

It can be written as a sum of positive squares in 2 ways, for example, as 269419034892121 + 50581966410000 = 16413989^2 + 7112100^2 .

It is a cyclic number.

It is not a de Polignac number, because 320001001302121 - 2²¹ = 320000999204969 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320001001302095 and 320001001302104.

It is not an unprimeable number, because it can be changed into a prime (320001001305121) 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, 266223794160 + ... + 266223795361.

It is an arithmetic number, because the mean of its divisors is an integer number (80133362223061).

Almost surely, 2^{320001001302121} is an apocalyptic number.

It is an amenable number.

320001001302121 is a deficient number, since it is larger than the sum of its proper divisors (532447590123).

320001001302121 is an equidigital number, since it uses as much as digits as its factorization.

320001001302121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532447590122.

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

Adding to 320001001302121 its reverse (121203100100023), we get a palindrome (441204101402144).

The spelling of 320001001302121 in words is "three hundred twenty trillion, one billion, one million, three hundred two thousand, one hundred twenty-one".