111021212122012 has 48 divisors (see below), whose sum is σ = 199352712081600. Its totient is φ = 54085508825600.

The previous prime is 111021212121881. The next prime is 111021212122057. The reversal of 111021212122012 is 210221212120111.

It is a happy number.

It is a congruent number.

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, 1677312 + ... + 14995192.

It is an arithmetic number, because the mean of its divisors is an integer number (4153181501700).

Almost surely, 2^{111021212122012} is an apocalyptic number.

It is an amenable number.

111021212122012 is a deficient number, since it is larger than the sum of its proper divisors (88331499959588).

111021212122012 is a wasteful number, since it uses less digits than its factorization.

111021212122012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13318302 (or 13318300 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 111021212122012 its reverse (210221212120111), we get a palindrome (321242424242123).

The spelling of 111021212122012 in words is "one hundred eleven trillion, twenty-one billion, two hundred twelve million, one hundred twenty-two thousand, twelve".