1211331000011 has 8 divisors (see below), whose sum is σ = 1346385057264. Its totient is φ = 1080432452320.

The previous prime is 1211331000001. The next prime is 1211331000031. The reversal of 1211331000011 is 1100001331121.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1211331000011 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 1211331000011.

It is not an unprimeable number, because it can be changed into a prime (1211331000001) 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, 1038876776 + ... + 1038877941.

It is an arithmetic number, because the mean of its divisors is an integer number (168298132158).

Almost surely, 2^{1211331000011} is an apocalyptic number.

1211331000011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1211331000011 is a deficient number, since it is larger than the sum of its proper divisors (135054057253).

1211331000011 is a wasteful number, since it uses less digits than its factorization.

1211331000011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2077754781.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 1211331000011 its reverse (1100001331121), we get a palindrome (2311332331132).

The spelling of 1211331000011 in words is "one trillion, two hundred eleven billion, three hundred thirty-one million, eleven", and thus it is an aban number.