11212221112211 has 8 divisors (see below), whose sum is σ = 12813987734784. Its totient is φ = 9610459677000.

The previous prime is 11212221112207. The next prime is 11212221112277. The reversal of 11212221112211 is 11221112221211.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11212221112211 - 2² = 11212221112207 is a prime.

It is a super-2 number, since 2×11212221112211² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11212221112291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6307586 + ... + 7887336.

It is an arithmetic number, because the mean of its divisors is an integer number (1601748466848).

Almost surely, 2^{11212221112211} is an apocalyptic number.

11212221112211 is a deficient number, since it is larger than the sum of its proper divisors (1601766622573).

11212221112211 is a wasteful number, since it uses less digits than its factorization.

11212221112211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2593681.

The product of its digits is 64, while the sum is 20.

Adding to 11212221112211 its reverse (11221112221211), we get a palindrome (22433333333422).

The spelling of 11212221112211 in words is "eleven trillion, two hundred twelve billion, two hundred twenty-one million, one hundred twelve thousand, two hundred eleven".