11122111022211 has 48 divisors (see below), whose sum is σ = 18765495141120. Its totient is φ = 6216752001600.

The previous prime is 11122111022177. The next prime is 11122111022261. The reversal of 11122111022211 is 11222011122111.

It is a happy number.

11122111022211 is a `hidden beast` number, since 111 + 221 + 110 + 2 + 221 + 1 = 666.

It is not a de Polignac number, because 11122111022211 - 2⁹ = 11122111021699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11122111022261) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10001601 + ... + 11057858.

It is an arithmetic number, because the mean of its divisors is an integer number (390947815440).

Almost surely, 2^{11122111022211} is an apocalyptic number.

11122111022211 is a deficient number, since it is larger than the sum of its proper divisors (7643384118909).

11122111022211 is a wasteful number, since it uses less digits than its factorization.

11122111022211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21059656 (or 21059653 counting only the distinct ones).

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

Adding to 11122111022211 its reverse (11222011122111), we get a palindrome (22344122144322).

The spelling of 11122111022211 in words is "eleven trillion, one hundred twenty-two billion, one hundred eleven million, twenty-two thousand, two hundred eleven".