1201210000011 has 24 divisors (see below), whose sum is σ = 2010113545440. Its totient is φ = 677002893696.

The previous prime is 1201209999991. The next prime is 1201210000033. The reversal of 1201210000011 is 1100000121021.

It is a happy number.

It is not a de Polignac number, because 1201210000011 - 2⁶ = 1201209999947 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1201209999948 and 1201210000002.

It is not an unprimeable number, because it can be changed into a prime (1201210000051) 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 23 ways as a sum of consecutive naturals, for example, 130590096 + ... + 130599293.

It is an arithmetic number, because the mean of its divisors is an integer number (83754731060).

Almost surely, 2^{1201210000011} is an apocalyptic number.

1201210000011 is a deficient number, since it is larger than the sum of its proper divisors (808903545429).

1201210000011 is a wasteful number, since it uses less digits than its factorization.

1201210000011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261189475 (or 261189472 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 1201210000011 its reverse (1100000121021), we get a palindrome (2301210121032).

The spelling of 1201210000011 in words is "one trillion, two hundred one billion, two hundred ten million, eleven", and thus it is an aban number.