111001021021012 has 24 divisors (see below), whose sum is σ = 200521986158592. Its totient is φ = 53709096631200.

The previous prime is 111001021020959. The next prime is 111001021021021. The reversal of 111001021021012 is 210120120100111.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 111001021020983 and 111001021021001.

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, 2718103 + ... + 15145630.

It is an arithmetic number, because the mean of its divisors is an integer number (8355082756608).

Almost surely, 2^{111001021021012} is an apocalyptic number.

It is an amenable number.

111001021021012 is a deficient number, since it is larger than the sum of its proper divisors (89520965137580).

111001021021012 is a wasteful number, since it uses less digits than its factorization.

111001021021012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17913879 (or 17913877 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 111001021021012 its reverse (210120120100111), we get a palindrome (321121141121123).

The spelling of 111001021021012 in words is "one hundred eleven trillion, one billion, twenty-one million, twenty-one thousand, twelve".