1321200301021 has 8 divisors (see below), whose sum is σ = 1327176474624. Its totient is φ = 1315224587760.

The previous prime is 1321200301009. The next prime is 1321200301063. The reversal of 1321200301021 is 1201030021231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1321200301021 - 2⁵ = 1321200300989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1321200300986 and 1321200301004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321200302021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6493251 + ... + 6693631.

It is an arithmetic number, because the mean of its divisors is an integer number (165897059328).

Almost surely, 2^{1321200301021} is an apocalyptic number.

It is an amenable number.

1321200301021 is a deficient number, since it is larger than the sum of its proper divisors (5976173603).

1321200301021 is a wasteful number, since it uses less digits than its factorization.

1321200301021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230171.

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

Adding to 1321200301021 its reverse (1201030021231), we get a palindrome (2522230322252).

The spelling of 1321200301021 in words is "one trillion, three hundred twenty-one billion, two hundred million, three hundred one thousand, twenty-one".