131012200121204 has 12 divisors (see below), whose sum is σ = 229358958694404. Its totient is φ = 65481069065664.

The previous prime is 131012200121203. The next prime is 131012200121291. The reversal of 131012200121204 is 402121002210131.

It can be written as a sum of positive squares in 2 ways, for example, as 119522879753104 + 11489320368100 = 10932652^2 + 3389590^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131012200121203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6257736959 + ... + 6257757894.

It is an arithmetic number, because the mean of its divisors is an integer number (19113246557867).

Almost surely, 2^{131012200121204} is an apocalyptic number.

It is an amenable number.

131012200121204 is a deficient number, since it is larger than the sum of its proper divisors (98346758573200).

131012200121204 is a wasteful number, since it uses less digits than its factorization.

131012200121204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12515497474 (or 12515497472 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 131012200121204 its reverse (402121002210131), we get a palindrome (533133202331335).

The spelling of 131012200121204 in words is "one hundred thirty-one trillion, twelve billion, two hundred million, one hundred twenty-one thousand, two hundred four".