1321532042501 has 8 divisors (see below), whose sum is σ = 1442325758304. Its totient is φ = 1200847399920.

The previous prime is 1321532042491. The next prime is 1321532042503. The reversal of 1321532042501 is 1052402351231.

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 1321532042501 - 2¹⁰ = 1321532041477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321532042503) 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, 27242966 + ... + 27291431.

It is an arithmetic number, because the mean of its divisors is an integer number (180290719788).

Almost surely, 2^{1321532042501} is an apocalyptic number.

1321532042501 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1321532042501 is a deficient number, since it is larger than the sum of its proper divisors (120793715803).

1321532042501 is a wasteful number, since it uses less digits than its factorization.

1321532042501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54536611.

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 1321532042501 its reverse (1052402351231), we get a palindrome (2373934393732).

The spelling of 1321532042501 in words is "one trillion, three hundred twenty-one billion, five hundred thirty-two million, forty-two thousand, five hundred one".