1200000001012 has 24 divisors (see below), whose sum is σ = 2204483339520. Its totient is φ = 570803714880.

The previous prime is 1200000000977. The next prime is 1200000001021. The reversal of 1200000001012 is 2101000000021.

It is a junction number, because it is equal to n+sod(n) for n = 1200000000986 and 1200000001004.

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, 82004713 + ... + 82019344.

It is an arithmetic number, because the mean of its divisors is an integer number (91853472480).

Almost surely, 2^{1200000001012} is an apocalyptic number.

It is an amenable number.

1200000001012 is a deficient number, since it is larger than the sum of its proper divisors (1004483338508).

1200000001012 is a wasteful number, since it uses less digits than its factorization.

1200000001012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164024151 (or 164024149 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 1200000001012 its reverse (2101000000021), we get a palindrome (3301000001033).

Subtracting 1200000001012 from its reverse (2101000000021), we obtain a palindrome (900999999009).

The spelling of 1200000001012 in words is "one trillion, two hundred billion, one thousand, twelve".