11212002221 has 8 divisors (see below), whose sum is σ = 13227062784. Its totient is φ = 9300278160.

The previous prime is 11212002203. The next prime is 11212002247. The reversal of 11212002221 is 12220021211.

11212002221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11212002221 - 2⁶ = 11212002157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11212002196 and 11212002205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11212007221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25833890 + ... + 25834323.

It is an arithmetic number, because the mean of its divisors is an integer number (1653382848).

Almost surely, 2^11212002221 is an apocalyptic number.

It is an amenable number.

11212002221 is a deficient number, since it is larger than the sum of its proper divisors (2015060563).

11212002221 is an equidigital number, since it uses as much as digits as its factorization.

11212002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51668251.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 11212002221 its reverse (12220021211), we get a palindrome (23432023432).

The spelling of 11212002221 in words is "eleven billion, two hundred twelve million, two thousand, two hundred twenty-one".