11222211012111 has 32 divisors (see below), whose sum is σ = 18150574924800. Its totient is φ = 6796214418240.

The previous prime is 11222211012097. The next prime is 11222211012161. The reversal of 11222211012111 is 11121011222211.

It is a happy number.

It is not a de Polignac number, because 11222211012111 - 2⁷ = 11222211011983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11222211012161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13842966 + ... + 14631203.

It is an arithmetic number, because the mean of its divisors is an integer number (567205466400).

Almost surely, 2^{11222211012111} is an apocalyptic number.

11222211012111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11222211012111 is a deficient number, since it is larger than the sum of its proper divisors (6928363912689).

11222211012111 is a wasteful number, since it uses less digits than its factorization.

11222211012111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28475516 (or 28475510 counting only the distinct ones).

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

Adding to 11222211012111 its reverse (11121011222211), we get a palindrome (22343222234322).

The spelling of 11222211012111 in words is "eleven trillion, two hundred twenty-two billion, two hundred eleven million, twelve thousand, one hundred eleven".