1001002111012 has 12 divisors (see below), whose sum is σ = 1768125224880. Its totient is φ = 495823475336.

The previous prime is 1001002111007. The next prime is 1001002111013. The reversal of 1001002111012 is 2101112001001.

It is a self number, because there is not a number n which added to its sum of digits gives 1001002111012.

It is not an unprimeable number, because it can be changed into a prime (1001002111013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1169394562 + ... + 1169395417.

It is an arithmetic number, because the mean of its divisors is an integer number (147343768740).

Almost surely, 2^{1001002111012} is an apocalyptic number.

It is an amenable number.

1001002111012 is a deficient number, since it is larger than the sum of its proper divisors (767123113868).

1001002111012 is a wasteful number, since it uses less digits than its factorization.

1001002111012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2338790090 (or 2338790088 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 1001002111012 its reverse (2101112001001), we get a palindrome (3102114112013).

The spelling of 1001002111012 in words is "one trillion, one billion, two million, one hundred eleven thousand, twelve".