11221213201 has 4 divisors (see below), whose sum is σ = 12241323504. Its totient is φ = 10201102900.

The previous prime is 11221213169. The next prime is 11221213217. The reversal of 11221213201 is 10231212211.

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 11221213201 - 2⁵ = 11221213169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11221213301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 510055135 + ... + 510055156.

It is an arithmetic number, because the mean of its divisors is an integer number (3060330876).

Almost surely, 2^11221213201 is an apocalyptic number.

11221213201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11221213201 is a deficient number, since it is larger than the sum of its proper divisors (1020110303).

11221213201 is a wasteful number, since it uses less digits than its factorization.

11221213201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020110302.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 11221213201 its reverse (10231212211), we get a palindrome (21452425412).

It can be divided in two parts, 11221 and 213201, that added together give a palindrome (224422).

The spelling of 11221213201 in words is "eleven billion, two hundred twenty-one million, two hundred thirteen thousand, two hundred one".