111211200202120 has 16 divisors (see below), whose sum is σ = 250225200454860. Its totient is φ = 44484480080832.

The previous prime is 111211200201991. The next prime is 111211200202121. The reversal of 111211200202120 is 21202002112111.

It can be written as a sum of positive squares in 2 ways, for example, as 103933906260804 + 7277293941316 = 10194798^2 + 2697646^2 .

It is a junction number, because it is equal to n+sod(n) for n = 111211200202094 and 111211200202103.

It is not an unprimeable number, because it can be changed into a prime (111211200202121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1390140002487 + ... + 1390140002566.

Almost surely, 2^{111211200202120} is an apocalyptic number.

111211200202120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111211200202120 is an abundant number, since it is smaller than the sum of its proper divisors (139014000252740).

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

111211200202120 is a wasteful number, since it uses less digits than its factorization.

111211200202120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2780280005064 (or 2780280005060 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 111211200202120 its reverse (21202002112111), we get a palindrome (132413202314231).

The spelling of 111211200202120 in words is "one hundred eleven trillion, two hundred eleven billion, two hundred million, two hundred two thousand, one hundred twenty".