11212222001 has 4 divisors (see below), whose sum is σ = 11223014400. Its totient is φ = 11201429604.

The previous prime is 11212221983. The next prime is 11212222033. The reversal of 11212222001 is 10022221211.

11212222001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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: 10022221211 = 78121 ⋅128291.

It is a cyclic number.

It is not a de Polignac number, because 11212222001 - 2¹⁰ = 11212220977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11212225001) 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 3 ways as a sum of consecutive naturals, for example, 5394641 + ... + 5396718.

It is an arithmetic number, because the mean of its divisors is an integer number (2805753600).

Almost surely, 2^11212222001 is an apocalyptic number.

It is an amenable number.

11212222001 is a deficient number, since it is larger than the sum of its proper divisors (10792399).

11212222001 is a wasteful number, since it uses less digits than its factorization.

11212222001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10792398.

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

Adding to 11212222001 its reverse (10022221211), we get a palindrome (21234443212).

The spelling of 11212222001 in words is "eleven billion, two hundred twelve million, two hundred twenty-two thousand, one".