111101021212 has 6 divisors (see below), whose sum is σ = 194426787128. Its totient is φ = 55550510604.

The previous prime is 111101021201. The next prime is 111101021231. The reversal of 111101021212 is 212120101111.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 111101021192 and 111101021201.

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, 13887627648 + ... + 13887627655.

Almost surely, 2^111101021212 is an apocalyptic number.

It is an amenable number.

111101021212 is a deficient number, since it is larger than the sum of its proper divisors (83325765916).

111101021212 is a wasteful number, since it uses less digits than its factorization.

111101021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27775255307 (or 27775255305 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 111101021212 its reverse (212120101111), we get a palindrome (323221122323).

The spelling of 111101021212 in words is "one hundred eleven billion, one hundred one million, twenty-one thousand, two hundred twelve".