2131003121011 has 4 divisors (see below), whose sum is σ = 2135666147992. Its totient is φ = 2126340094032.

The previous prime is 2131003120999. The next prime is 2131003121069. The reversal of 2131003121011 is 1101213001312.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2131003121011 - 2⁵ = 2131003120979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2131003131011) 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 3 ways as a sum of consecutive naturals, for example, 2331512805 + ... + 2331513718.

It is an arithmetic number, because the mean of its divisors is an integer number (533916536998).

Almost surely, 2^{2131003121011} is an apocalyptic number.

2131003121011 is a deficient number, since it is larger than the sum of its proper divisors (4663026981).

2131003121011 is an equidigital number, since it uses as much as digits as its factorization.

2131003121011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4663026980.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 2131003121011 its reverse (1101213001312), we get a palindrome (3232216122323).

The spelling of 2131003121011 in words is "two trillion, one hundred thirty-one billion, three million, one hundred twenty-one thousand, eleven".