1321201002101 has 8 divisors (see below), whose sum is σ = 1325716260000. Its totient is φ = 1316693215440.

The previous prime is 1321201002091. The next prime is 1321201002139. The reversal of 1321201002101 is 1012001021231.

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 1321201002101 - 2¹⁰ = 1321201001077 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 (1321201022101) 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, 1513415 + ... + 2220996.

It is an arithmetic number, because the mean of its divisors is an integer number (165714532500).

Almost surely, 2^{1321201002101} is an apocalyptic number.

It is an amenable number.

1321201002101 is a deficient number, since it is larger than the sum of its proper divisors (4515257899).

1321201002101 is an equidigital number, since it uses as much as digits as its factorization.

1321201002101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3735619.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 1321201002101 its reverse (1012001021231), we get a palindrome (2333202023332).

The spelling of 1321201002101 in words is "one trillion, three hundred twenty-one billion, two hundred one million, two thousand, one hundred one".