111211211211222 has 32 divisors (see below), whose sum is σ = 226938906558720. Its totient is φ = 36324062742240.

The previous prime is 111211211211197. The next prime is 111211211211223. The reversal of 111211211211222 is 222112112112111.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111211211211223) 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, 800725597 + ... + 800864472.

It is an arithmetic number, because the mean of its divisors is an integer number (7091840829960).

Almost surely, 2^{111211211211222} is an apocalyptic number.

111211211211222 is an abundant number, since it is smaller than the sum of its proper divisors (115727695347498).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111211211211222 is a wasteful number, since it uses less digits than its factorization.

111211211211222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1601590308.

The product of its digits is 64, while the sum is 21.

Adding to 111211211211222 its reverse (222112112112111), we get a palindrome (333323323323333).

The spelling of 111211211211222 in words is "one hundred eleven trillion, two hundred eleven billion, two hundred eleven million, two hundred eleven thousand, two hundred twenty-two".