111121171222 has 4 divisors (see below), whose sum is σ = 166681756836. Its totient is φ = 55560585610.

The previous prime is 111121171219. The next prime is 111121171253. The reversal of 111121171222 is 222171121111.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 111121171193 and 111121171202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27780292804 + ... + 27780292807.

It is an arithmetic number, because the mean of its divisors is an integer number (41670439209).

Almost surely, 2^111121171222 is an apocalyptic number.

111121171222 is a deficient number, since it is larger than the sum of its proper divisors (55560585614).

111121171222 is an equidigital number, since it uses as much as digits as its factorization.

111121171222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55560585613.

The product of its digits is 112, while the sum is 22.

Adding to 111121171222 its reverse (222171121111), we get a palindrome (333292292333).

The spelling of 111121171222 in words is "one hundred eleven billion, one hundred twenty-one million, one hundred seventy-one thousand, two hundred twenty-two".