111012221012 has 72 divisors (see below), whose sum is σ = 248180170560. Its totient is φ = 42518361600.

The previous prime is 111012221011. The next prime is 111012221017. The reversal of 111012221012 is 210122210111.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111012221011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 77789 + ... + 477572.

Almost surely, 2^111012221012 is an apocalyptic number.

It is an amenable number.

111012221012 is an abundant number, since it is smaller than the sum of its proper divisors (137167949548).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111012221012 is a wasteful number, since it uses less digits than its factorization.

111012221012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555453 (or 555440 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 111012221012 its reverse (210122210111), we get a palindrome (321134431123).

The spelling of 111012221012 in words is "one hundred eleven billion, twelve million, two hundred twenty-one thousand, twelve".