1111200121012 has 12 divisors (see below), whose sum is σ = 1944693521316. Its totient is φ = 555573400640.

The previous prime is 1111200120991. The next prime is 1111200121039. The reversal of 1111200121012 is 2101210021111.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 265105533456 + 846094587556 = 514884^2 + 919834^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1111200120983 and 1111200121001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6571039 + ... + 6738022.

It is an arithmetic number, because the mean of its divisors is an integer number (162057793443).

Almost surely, 2^{1111200121012} is an apocalyptic number.

It is an amenable number.

1111200121012 is a deficient number, since it is larger than the sum of its proper divisors (833493400304).

1111200121012 is a wasteful number, since it uses less digits than its factorization.

1111200121012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13329938 (or 13329936 counting only the distinct ones).

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

Adding to 1111200121012 its reverse (2101210021111), we get a palindrome (3212410142123).

Subtracting 1111200121012 from its reverse (2101210021111), we obtain a palindrome (990009900099).

The spelling of 1111200121012 in words is "one trillion, one hundred eleven billion, two hundred million, one hundred twenty-one thousand, twelve".