11022211212111 has 48 divisors (see below), whose sum is σ = 18213982375680. Its totient is φ = 6605070246720.

The previous prime is 11022211212017. The next prime is 11022211212137. The reversal of 11022211212111 is 11121211222011.

It is a happy number.

11022211212111 is a `hidden beast` number, since 110 + 2 + 221 + 121 + 211 + 1 = 666.

It is not a de Polignac number, because 11022211212111 - 2¹⁴ = 11022211195727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11022211212911) 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, 22928035 + ... + 23403828.

It is an arithmetic number, because the mean of its divisors is an integer number (379457966160).

Almost surely, 2^{11022211212111} is an apocalyptic number.

11022211212111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11022211212111 is a deficient number, since it is larger than the sum of its proper divisors (7191771163569).

11022211212111 is an equidigital number, since it uses as much as digits as its factorization.

11022211212111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46331978 (or 46331966 counting only the distinct ones).

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

Adding to 11022211212111 its reverse (11121211222011), we get a palindrome (22143422434122).

The spelling of 11022211212111 in words is "eleven trillion, twenty-two billion, two hundred eleven million, two hundred twelve thousand, one hundred eleven".