1321200321301 has 16 divisors (see below), whose sum is σ = 1562749977600. Its totient is φ = 1092889340928.

The previous prime is 1321200321299. The next prime is 1321200321307. The reversal of 1321200321301 is 1031230021231.

It is not a de Polignac number, because 1321200321301 - 2¹ = 1321200321299 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321200321307) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1111141 + ... + 1969018.

It is an arithmetic number, because the mean of its divisors is an integer number (97671873600).

Almost surely, 2^{1321200321301} is an apocalyptic number.

It is an amenable number.

1321200321301 is a deficient number, since it is larger than the sum of its proper divisors (241549656299).

1321200321301 is a wasteful number, since it uses less digits than its factorization.

1321200321301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3082308.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 1321200321301 its reverse (1031230021231), we get a palindrome (2352430342532).

The spelling of 1321200321301 in words is "one trillion, three hundred twenty-one billion, two hundred million, three hundred twenty-one thousand, three hundred one".