1321021331301 has 8 divisors (see below), whose sum is σ = 2012984885824. Its totient is φ = 754869332160.

The previous prime is 1321021331257. The next prime is 1321021331309. The reversal of 1321021331301 is 1031331201231.

It is a happy number.

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

It is not a de Polignac number, because 1321021331301 - 2¹³ = 1321021323109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 62905777681 = 1321021331301 / (1 + 3 + 2 + 1 + 0 + 2 + 1 + 3 + 3 + 1 + 3 + 0 + 1).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321021331309) 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, 31452888820 + ... + 31452888861.

It is an arithmetic number, because the mean of its divisors is an integer number (251623110728).

Almost surely, 2^{1321021331301} is an apocalyptic number.

It is an amenable number.

1321021331301 is a deficient number, since it is larger than the sum of its proper divisors (691963554523).

1321021331301 is an equidigital number, since it uses as much as digits as its factorization.

1321021331301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62905777691.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 1321021331301 its reverse (1031331201231), we get a palindrome (2352352532532).

The spelling of 1321021331301 in words is "one trillion, three hundred twenty-one billion, twenty-one million, three hundred thirty-one thousand, three hundred one".