111111202211122 has 4 divisors (see below), whose sum is σ = 166666803316686. Its totient is φ = 55555601105560.

The previous prime is 111111202211099. The next prime is 111111202211201. The reversal of 111111202211122 is 221112202111111.

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

It can be written as a sum of positive squares in only one way, i.e., 99225525362401 + 11885676848721 = 9961201^2 + 3447561^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 111111202211122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27777800552779 + ... + 27777800552782.

Almost surely, 2^{111111202211122} is an apocalyptic number.

111111202211122 is a deficient number, since it is larger than the sum of its proper divisors (55555601105564).

111111202211122 is an equidigital number, since it uses as much as digits as its factorization.

111111202211122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55555601105563.

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 111111202211122 its reverse (221112202111111), we get a palindrome (332223404322233).

The spelling of 111111202211122 in words is "one hundred eleven trillion, one hundred eleven billion, two hundred two million, two hundred eleven thousand, one hundred twenty-two".