111201020212 has 6 divisors (see below), whose sum is σ = 194601785378. Its totient is φ = 55600510104.

The previous prime is 111201020209. The next prime is 111201020239. The reversal of 111201020212 is 212020102111.

It can be written as a sum of positive squares in only one way, i.e., 97040972196 + 14160048016 = 311514^2 + 118996^2 .

It is a junction number, because it is equal to n+sod(n) for n = 111201020192 and 111201020201.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 13900127523 + ... + 13900127530.

Almost surely, 2^111201020212 is an apocalyptic number.

It is an amenable number.

111201020212 is a deficient number, since it is larger than the sum of its proper divisors (83400765166).

111201020212 is a wasteful number, since it uses less digits than its factorization.

111201020212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27800255057 (or 27800255055 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 111201020212 its reverse (212020102111), we get a palindrome (323221122323).

The spelling of 111201020212 in words is "one hundred eleven billion, two hundred one million, twenty thousand, two hundred twelve".