2131231201012 has 24 divisors (see below), whose sum is σ = 3949310912904. Its totient is φ = 1002865062912.

The previous prime is 2131231201003. The next prime is 2131231201019. The reversal of 2131231201012 is 2101021321312.

It can be written as a sum of positive squares in 4 ways, for example, as 216898844176 + 1914332356836 = 465724^2 + 1383594^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131231201019) 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 7 ways as a sum of consecutive naturals, for example, 22383 + ... + 2064694.

It is an arithmetic number, because the mean of its divisors is an integer number (164554621371).

Almost surely, 2^{2131231201012} is an apocalyptic number.

It is an amenable number.

2131231201012 is a deficient number, since it is larger than the sum of its proper divisors (1818079711892).

2131231201012 is a wasteful number, since it uses less digits than its factorization.

2131231201012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2102115 (or 2102113 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 2131231201012 its reverse (2101021321312), we get a palindrome (4232252522324).

The spelling of 2131231201012 in words is "two trillion, one hundred thirty-one billion, two hundred thirty-one million, two hundred one thousand, twelve".