111213030122 has 4 divisors (see below), whose sum is σ = 166819545186. Its totient is φ = 55606515060.

The previous prime is 111213030121. The next prime is 111213030143. The reversal of 111213030122 is 221030312111.

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., 90216730321 + 20996299801 = 300361^2 + 144901^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 111213030122.

It is not an unprimeable number, because it can be changed into a prime (111213030121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27803257529 + ... + 27803257532.

Almost surely, 2^111213030122 is an apocalyptic number.

111213030122 is a deficient number, since it is larger than the sum of its proper divisors (55606515064).

111213030122 is an equidigital number, since it uses as much as digits as its factorization.

111213030122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55606515063.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 111213030122 its reverse (221030312111), we get a palindrome (332243342233).

The spelling of 111213030122 in words is "one hundred eleven billion, two hundred thirteen million, thirty thousand, one hundred twenty-two".