111222022212111 has 16 divisors (see below), whose sum is σ = 151451669634048. Its totient is φ = 72570203244000.

The previous prime is 111222022212053. The next prime is 111222022212149. The reversal of 111222022212111 is 111212220222111.

It is not a de Polignac number, because 111222022212111 - 2⁷ = 111222022211983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111222022262111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67586206 + ... + 69212276.

It is an arithmetic number, because the mean of its divisors is an integer number (9465729352128).

Almost surely, 2^{111222022212111} is an apocalyptic number.

111222022212111 is a deficient number, since it is larger than the sum of its proper divisors (40229647421937).

111222022212111 is a wasteful number, since it uses less digits than its factorization.

111222022212111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2111222.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 111222022212111 its reverse (111212220222111), we get a palindrome (222434242434222).

The spelling of 111222022212111 in words is "one hundred eleven trillion, two hundred twenty-two billion, twenty-two million, two hundred twelve thousand, one hundred eleven".