111121012201012 has 48 divisors (see below), whose sum is σ = 212694602198400. Its totient is φ = 50377689065600.

The previous prime is 111121012201009. The next prime is 111121012201013. The reversal of 111121012201012 is 210102210121111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111121012201013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25976838 + ... + 29950594.

It is an arithmetic number, because the mean of its divisors is an integer number (4431137545800).

Almost surely, 2^{111121012201012} is an apocalyptic number.

It is an amenable number.

111121012201012 is a deficient number, since it is larger than the sum of its proper divisors (101573589997388).

111121012201012 is a wasteful number, since it uses less digits than its factorization.

111121012201012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3975432 (or 3975430 counting only the distinct ones).

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

Adding to 111121012201012 its reverse (210102210121111), we get a palindrome (321223222322123).

The spelling of 111121012201012 in words is "one hundred eleven trillion, one hundred twenty-one billion, twelve million, two hundred one thousand, twelve".