11211320201 has 4 divisors (see below), whose sum is σ = 11346396432. Its totient is φ = 11076243972.

The previous prime is 11211320143. The next prime is 11211320203. The reversal of 11211320201 is 10202311211.

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, and also an emirpimes, since its reverse is a distinct semiprime: 10202311211 = 59 ⋅172920529.

It is a cyclic number.

It is not a de Polignac number, because 11211320201 - 2⁶ = 11211320137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11211320203) 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, 67537991 + ... + 67538156.

It is an arithmetic number, because the mean of its divisors is an integer number (2836599108).

Almost surely, 2^11211320201 is an apocalyptic number.

It is an amenable number.

11211320201 is a deficient number, since it is larger than the sum of its proper divisors (135076231).

11211320201 is an equidigital number, since it uses as much as digits as its factorization.

11211320201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135076230.

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

Adding to 11211320201 its reverse (10202311211), we get a palindrome (21413631412).

The spelling of 11211320201 in words is "eleven billion, two hundred eleven million, three hundred twenty thousand, two hundred one".