131220210020101 has 4 divisors (see below), whose sum is σ = 131232946147072. Its totient is φ = 131207473893132.

The previous prime is 131220210020077. The next prime is 131220210020171. The reversal of 131220210020101 is 101020012022131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 131220210020101 - 2⁵ = 131220210020069 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 (131220210020171) 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, 6368048031 + ... + 6368068636.

It is an arithmetic number, because the mean of its divisors is an integer number (32808236536768).

Almost surely, 2^{131220210020101} is an apocalyptic number.

It is an amenable number.

131220210020101 is a deficient number, since it is larger than the sum of its proper divisors (12736126971).

131220210020101 is a wasteful number, since it uses less digits than its factorization.

131220210020101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12736126970.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 131220210020101 its reverse (101020012022131), we get a palindrome (232240222042232).

The spelling of 131220210020101 in words is "one hundred thirty-one trillion, two hundred twenty billion, two hundred ten million, twenty thousand, one hundred one".