1311021322201 has 4 divisors (see below), whose sum is σ = 1311059624400. Its totient is φ = 1310983020004.

The previous prime is 1311021322181. The next prime is 1311021322223. The reversal of 1311021322201 is 1022231201131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1311021322201 - 2⁹ = 1311021321689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1311021322001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19099711 + ... + 19168228.

It is an arithmetic number, because the mean of its divisors is an integer number (327764906100).

Almost surely, 2^{1311021322201} is an apocalyptic number.

It is an amenable number.

1311021322201 is a deficient number, since it is larger than the sum of its proper divisors (38302199).

1311021322201 is an equidigital number, since it uses as much as digits as its factorization.

1311021322201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38302198.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1311021322201 its reverse (1022231201131), we get a palindrome (2333252523332).

The spelling of 1311021322201 in words is "one trillion, three hundred eleven billion, twenty-one million, three hundred twenty-two thousand, two hundred one".