111100001021012 has 24 divisors (see below), whose sum is σ = 195611190347496. Its totient is φ = 55211616165888.

The previous prime is 111100001020937. The next prime is 111100001021033. The reversal of 111100001021012 is 210120100001111.

It can be written as a sum of positive squares in 4 ways, for example, as 27435428797456 + 83664572223556 = 5237884^2 + 9146834^2 .

It is a junction number, because it is equal to n+sod(n) for n = 111100001020984 and 111100001021002.

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, 64989653 + ... + 66677244.

It is an arithmetic number, because the mean of its divisors is an integer number (8150466264479).

Almost surely, 2^{111100001021012} is an apocalyptic number.

It is an amenable number.

111100001021012 is a deficient number, since it is larger than the sum of its proper divisors (84511189326484).

111100001021012 is a wasteful number, since it uses less digits than its factorization.

111100001021012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131668187 (or 131668185 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 111100001021012 its reverse (210120100001111), we get a palindrome (321220101022123).

The spelling of 111100001021012 in words is "one hundred eleven trillion, one hundred billion, one million, twenty-one thousand, twelve".