1200012020011 has 8 divisors (see below), whose sum is σ = 1443623482880. Its totient is φ = 974445850728.

The previous prime is 1200012019963. The next prime is 1200012020027. The reversal of 1200012020011 is 1100202100021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1200012020011 - 2⁹ = 1200012019499 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1200012020011.

It is not an unprimeable number, because it can be changed into a prime (1200012023011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4511323251 + ... + 4511323516.

It is an arithmetic number, because the mean of its divisors is an integer number (180452935360).

Almost surely, 2^{1200012020011} is an apocalyptic number.

1200012020011 is a deficient number, since it is larger than the sum of its proper divisors (243611462869).

1200012020011 is an equidigital number, since it uses as much as digits as its factorization.

1200012020011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9022646793.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1200012020011 its reverse (1100202100021), we get a palindrome (2300214120032).

The spelling of 1200012020011 in words is "one trillion, two hundred billion, twelve million, twenty thousand, eleven".