11021211122211 has 36 divisors (see below), whose sum is σ = 16434672228520. Its totient is φ = 7116695769600.

The previous prime is 11021211122203. The next prime is 11021211122291. The reversal of 11021211122211 is 11222111212011.

It is a happy number.

11021211122211 is a `hidden beast` number, since 110 + 212 + 11 + 122 + 211 = 666.

It is not a de Polignac number, because 11021211122211 - 2³ = 11021211122203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11021211122291) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 517510 + ... + 4723371.

Almost surely, 2^{11021211122211} is an apocalyptic number.

11021211122211 is a deficient number, since it is larger than the sum of its proper divisors (5413461106309).

11021211122211 is a wasteful number, since it uses less digits than its factorization.

11021211122211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5241108 (or 5241064 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 11021211122211 its reverse (11222111212011), we get a palindrome (22243322334222).

The spelling of 11021211122211 in words is "eleven trillion, twenty-one billion, two hundred eleven million, one hundred twenty-two thousand, two hundred eleven".