111001220122 has 8 divisors (see below), whose sum is σ = 179309663316. Its totient is φ = 51231332352.

The previous prime is 111001220087. The next prime is 111001220123. The reversal of 111001220122 is 221022100111.

It can be written as a sum of positive squares in 2 ways, for example, as 108379882521 + 2621337601 = 329211^2 + 51199^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (111001220123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2134638823 + ... + 2134638874.

Almost surely, 2^111001220122 is an apocalyptic number.

111001220122 is a deficient number, since it is larger than the sum of its proper divisors (68308443194).

111001220122 is a wasteful number, since it uses less digits than its factorization.

111001220122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4269277712.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 111001220122 its reverse (221022100111), we get a palindrome (332023320233).

The spelling of 111001220122 in words is "one hundred eleven billion, one million, two hundred twenty thousand, one hundred twenty-two".