11211111020201 has 4 divisors (see below), whose sum is σ = 11211450917712. Its totient is φ = 11210771122692.

The previous prime is 11211111020149. The next prime is 11211111020227. The reversal of 11211111020201 is 10202011111211.

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 11211111020201 - 2¹⁴ = 11211111003817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11211111020261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169899275 + ... + 169965248.

It is an arithmetic number, because the mean of its divisors is an integer number (2802862729428).

Almost surely, 2^{11211111020201} is an apocalyptic number.

It is an amenable number.

11211111020201 is a deficient number, since it is larger than the sum of its proper divisors (339897511).

11211111020201 is an equidigital number, since it uses as much as digits as its factorization.

11211111020201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339897510.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 11211111020201 its reverse (10202011111211), we get a palindrome (21413122131412).

The spelling of 11211111020201 in words is "eleven trillion, two hundred eleven billion, one hundred eleven million, twenty thousand, two hundred one".