111211112210012 has 24 divisors (see below), whose sum is σ = 194646446236032. Its totient is φ = 55597842342000.

The previous prime is 111211112209999. The next prime is 111211112210021. The reversal of 111211112210012 is 210012211112111.

It is a super-2 number, since 2×111211112210012² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1491708137 + ... + 1491782687.

It is an arithmetic number, because the mean of its divisors is an integer number (8110268593168).

Almost surely, 2^{111211112210012} is an apocalyptic number.

It is an amenable number.

111211112210012 is a deficient number, since it is larger than the sum of its proper divisors (83435334026020).

111211112210012 is a wasteful number, since it uses less digits than its factorization.

111211112210012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121289 (or 121287 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 111211112210012 its reverse (210012211112111), we get a palindrome (321223323322123).

The spelling of 111211112210012 in words is "one hundred eleven trillion, two hundred eleven billion, one hundred twelve million, two hundred ten thousand, twelve".