111212121122202 has 32 divisors (see below), whose sum is σ = 224039028326400. Its totient is φ = 36801610817328.

The previous prime is 111212121122197. The next prime is 111212121122233. The reversal of 111212121122202 is 202221121212111.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8468373 + ... + 17150439.

It is an arithmetic number, because the mean of its divisors is an integer number (7001219635200).

Almost surely, 2^{111212121122202} is an apocalyptic number.

111212121122202 is an abundant number, since it is smaller than the sum of its proper divisors (112826907204198).

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

111212121122202 is a wasteful number, since it uses less digits than its factorization.

111212121122202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8697570.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 111212121122202 its reverse (202221121212111), we get a palindrome (313433242334313).

The spelling of 111212121122202 in words is "one hundred eleven trillion, two hundred twelve billion, one hundred twenty-one million, one hundred twenty-two thousand, two hundred two".