1200202020011 has 16 divisors (see below), whose sum is σ = 1293883852800. Its totient is φ = 1109856103200.

The previous prime is 1200202020001. The next prime is 1200202020019. The reversal of 1200202020011 is 1100202020021.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1200202020011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1200202019974 and 1200202020001.

It is not an unprimeable number, because it can be changed into a prime (1200202020019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3800651 + ... + 4104308.

It is an arithmetic number, because the mean of its divisors is an integer number (80867740800).

Almost surely, 2^{1200202020011} is an apocalyptic number.

1200202020011 is a deficient number, since it is larger than the sum of its proper divisors (93681832789).

1200202020011 is a wasteful number, since it uses less digits than its factorization.

1200202020011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7905170.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 1200202020011 its reverse (1100202020021), we get a palindrome (2300404040032).

The spelling of 1200202020011 in words is "one trillion, two hundred billion, two hundred two million, twenty thousand, eleven".