131012201140421 has 4 divisors (see below), whose sum is σ = 131430770473452. Its totient is φ = 130593631807392.

The previous prime is 131012201140333. The next prime is 131012201140423. The reversal of 131012201140421 is 124041102210131.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5054003068321 + 125958198072100 = 2248111^2 + 11223110^2 .

It is a cyclic number.

It is not a de Polignac number, because 131012201140421 - 2¹⁸ = 131012200878277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131012201140423) 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, 209284666046 + ... + 209284666671.

It is an arithmetic number, because the mean of its divisors is an integer number (32857692618363).

Almost surely, 2^{131012201140421} is an apocalyptic number.

It is an amenable number.

131012201140421 is a deficient number, since it is larger than the sum of its proper divisors (418569333031).

131012201140421 is an equidigital number, since it uses as much as digits as its factorization.

131012201140421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418569333030.

The product of its (nonzero) digits is 384, while the sum is 23.

Adding to 131012201140421 its reverse (124041102210131), we get a palindrome (255053303350552).

The spelling of 131012201140421 in words is "one hundred thirty-one trillion, twelve billion, two hundred one million, one hundred forty thousand, four hundred twenty-one".