111022121221012 has 24 divisors (see below), whose sum is σ = 204634103133600. Its totient is φ = 52558653734496.

The previous prime is 111022121221003. The next prime is 111022121221057. The reversal of 111022121221012 is 210122121220111.

It is a happy number.

It is a super-2 number, since 2×111022121221012² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

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, 427259638 + ... + 427519405.

It is an arithmetic number, because the mean of its divisors is an integer number (8526420963900).

Almost surely, 2^{111022121221012} is an apocalyptic number.

It is an amenable number.

111022121221012 is a deficient number, since it is larger than the sum of its proper divisors (93611981912588).

111022121221012 is a wasteful number, since it uses less digits than its factorization.

111022121221012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854780775 (or 854780773 counting only the distinct ones).

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

Adding to 111022121221012 its reverse (210122121220111), we get a palindrome (321144242441123).

Subtracting 111022121221012 from its reverse (210122121220111), we obtain a palindrome (99099999999099).

The spelling of 111022121221012 in words is "one hundred eleven trillion, twenty-two billion, one hundred twenty-one million, two hundred twenty-one thousand, twelve".