1111122212211 has 24 divisors (see below), whose sum is σ = 1751621839344. Its totient is φ = 673114095360.

The previous prime is 1111122212149. The next prime is 1111122212327. The reversal of 1111122212211 is 1122122211111.

It is a happy number.

1111122212211 is a `hidden beast` number, since 111 + 112 + 221 + 221 + 1 = 666.

It is not a de Polignac number, because 1111122212211 - 2⁹ = 1111122211699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1111122214211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2215666 + ... + 2670471.

It is an arithmetic number, because the mean of its divisors is an integer number (72984243306).

Almost surely, 2^{1111122212211} is an apocalyptic number.

1111122212211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1111122212211 is a deficient number, since it is larger than the sum of its proper divisors (640499627133).

1111122212211 is a wasteful number, since it uses less digits than its factorization.

1111122212211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4888451 (or 4888448 counting only the distinct ones).

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

Adding to 1111122212211 its reverse (1122122211111), we get a palindrome (2233244423322).

The spelling of 1111122212211 in words is "one trillion, one hundred eleven billion, one hundred twenty-two million, two hundred twelve thousand, two hundred eleven".