111021020212 has 12 divisors (see below), whose sum is σ = 194328662976. Its totient is φ = 55498545080.

The previous prime is 111021020197. The next prime is 111021020221. The reversal of 111021020212 is 212020120111.

It is a junction number, because it is equal to n+sod(n) for n = 111021020192 and 111021020201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2970364 + ... + 3007507.

It is an arithmetic number, because the mean of its divisors is an integer number (16194055248).

Almost surely, 2^111021020212 is an apocalyptic number.

It is an amenable number.

111021020212 is a deficient number, since it is larger than the sum of its proper divisors (83307642764).

111021020212 is a wasteful number, since it uses less digits than its factorization.

111021020212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5982518 (or 5982516 counting only the distinct ones).

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

Adding to 111021020212 its reverse (212020120111), we get a palindrome (323041140323).

The spelling of 111021020212 in words is "one hundred eleven billion, twenty-one million, twenty thousand, two hundred twelve".