1321501001301 has 48 divisors (see below), whose sum is σ = 2199334650240. Its totient is φ = 757799660160.

The previous prime is 1321501001269. The next prime is 1321501001309. The reversal of 1321501001301 is 1031001051231.

1321501001301 is a `hidden beast` number, since 1 + 32 + 1 + 501 + 0 + 0 + 130 + 1 = 666.

It is not a de Polignac number, because 1321501001301 - 2⁵ = 1321501001269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321501001309) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4737081 + ... + 5008286.

It is an arithmetic number, because the mean of its divisors is an integer number (45819471880).

Almost surely, 2^{1321501001301} is an apocalyptic number.

It is an amenable number.

1321501001301 is a deficient number, since it is larger than the sum of its proper divisors (877833648939).

1321501001301 is a wasteful number, since it uses less digits than its factorization.

1321501001301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9745466 (or 9745463 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

Adding to 1321501001301 its reverse (1031001051231), we get a palindrome (2352502052532).

The spelling of 1321501001301 in words is "one trillion, three hundred twenty-one billion, five hundred one million, one thousand, three hundred one".