11112112121202 has 12 divisors (see below), whose sum is σ = 24076242929310. Its totient is φ = 3704037373728.

The previous prime is 11112112121183. The next prime is 11112112121207. The reversal of 11112112121202 is 20212121121111.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 7211206666161 + 3900905455041 = 2685369^2 + 1975071^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 617339562289 = 11112112121202 / (1 + 1 + 1 + 1 + 2 + 1 + 1 + 2 + 1 + 2 + 1 + 2 + 0 + 2).

It is not an unprimeable number, because it can be changed into a prime (11112112121207) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 308669781127 + ... + 308669781162.

Almost surely, 2^{11112112121202} is an apocalyptic number.

11112112121202 is an abundant number, since it is smaller than the sum of its proper divisors (12964130808108).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11112112121202 is a wasteful number, since it uses less digits than its factorization.

11112112121202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617339562297 (or 617339562294 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 11112112121202 its reverse (20212121121111), we get a palindrome (31324233242313).

The spelling of 11112112121202 in words is "eleven trillion, one hundred twelve billion, one hundred twelve million, one hundred twenty-one thousand, two hundred two".