1201203331011 has 24 divisors (see below), whose sum is σ = 1738261085184. Its totient is φ = 799330604400.

The previous prime is 1201203330937. The next prime is 1201203331093. The reversal of 1201203331011 is 1101333021021.

1201203331011 is a `hidden beast` number, since 120 + 1 + 203 + 331 + 0 + 11 = 666.

It is not a de Polignac number, because 1201203331011 - 2¹⁷ = 1201203199939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1201203331711) 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 23 ways as a sum of consecutive naturals, for example, 33585040 + ... + 33620786.

It is an arithmetic number, because the mean of its divisors is an integer number (72427545216).

Almost surely, 2^{1201203331011} is an apocalyptic number.

1201203331011 is a deficient number, since it is larger than the sum of its proper divisors (537057754173).

1201203331011 is a wasteful number, since it uses less digits than its factorization.

1201203331011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42511 (or 42508 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 1201203331011 its reverse (1101333021021), we get a palindrome (2302536352032).

The spelling of 1201203331011 in words is "one trillion, two hundred one billion, two hundred three million, three hundred thirty-one thousand, eleven".