111211022222012 has 6 divisors (see below), whose sum is σ = 194619288888528. Its totient is φ = 55605511111004.

The previous prime is 111211022222009. The next prime is 111211022222051. The reversal of 111211022222012 is 210222220112111.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13901377777748 + ... + 13901377777755.

It is an arithmetic number, because the mean of its divisors is an integer number (32436548148088).

Almost surely, 2^{111211022222012} is an apocalyptic number.

It is an amenable number.

111211022222012 is a deficient number, since it is larger than the sum of its proper divisors (83408266666516).

111211022222012 is a wasteful number, since it uses less digits than its factorization.

111211022222012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27802755555507 (or 27802755555505 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 111211022222012 its reverse (210222220112111), we get a palindrome (321433242334123).

The spelling of 111211022222012 in words is "one hundred eleven trillion, two hundred eleven billion, twenty-two million, two hundred twenty-two thousand, twelve".