111212101112122 has 8 divisors (see below), whose sum is σ = 167226020010900. Its totient is φ = 55470094441824.

The previous prime is 111212101112089. The next prime is 111212101112129. The reversal of 111212101112122 is 221211101212111.

It can be written as a sum of positive squares in 2 ways, for example, as 101975844659481 + 9236256452641 = 10098309^2 + 3039121^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 111212101112122.

It is not an unprimeable number, because it can be changed into a prime (111212101112129) 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, 67978056097 + ... + 67978057732.

Almost surely, 2^{111212101112122} is an apocalyptic number.

111212101112122 is a deficient number, since it is larger than the sum of its proper divisors (56013918898778).

111212101112122 is a wasteful number, since it uses less digits than its factorization.

111212101112122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135956114240.

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

Adding to 111212101112122 its reverse (221211101212111), we get a palindrome (332423202324233).

The spelling of 111212101112122 in words is "one hundred eleven trillion, two hundred twelve billion, one hundred one million, one hundred twelve thousand, one hundred twenty-two".