111121001111222 has 4 divisors (see below), whose sum is σ = 166681501666836. Its totient is φ = 55560500555610.

The previous prime is 111121001111213. The next prime is 111121001111251. The reversal of 111121001111222 is 222111100121111.

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

It is a self number, because there is not a number n which added to its sum of digits gives 111121001111222.

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, 27780250277804 + ... + 27780250277807.

It is an arithmetic number, because the mean of its divisors is an integer number (41670375416709).

Almost surely, 2^{111121001111222} is an apocalyptic number.

111121001111222 is a deficient number, since it is larger than the sum of its proper divisors (55560500555614).

111121001111222 is an equidigital number, since it uses as much as digits as its factorization.

111121001111222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55560500555613.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 111121001111222 its reverse (222111100121111), we get a palindrome (333232101232333).

The spelling of 111121001111222 in words is "one hundred eleven trillion, one hundred twenty-one billion, one million, one hundred eleven thousand, two hundred twenty-two".