131030222121 has 6 divisors (see below), whose sum is σ = 189265876410. Its totient is φ = 87353481408.

The previous prime is 131030222111. The next prime is 131030222131. The reversal of 131030222121 is 121222030131.

It is an interprime number because it is at equal distance from previous prime (131030222111) and next prime (131030222131).

It can be written as a sum of positive squares in only one way, i.e., 83315936025 + 47714286096 = 288645^2 + 218436^2 .

It is not a de Polignac number, because 131030222121 - 2²³ = 131021833513 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131030222094 and 131030222103.

It is not an unprimeable number, because it can be changed into a prime (131030222111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7279456776 + ... + 7279456793.

It is an arithmetic number, because the mean of its divisors is an integer number (31544312735).

Almost surely, 2^131030222121 is an apocalyptic number.

It is an amenable number.

131030222121 is a deficient number, since it is larger than the sum of its proper divisors (58235654289).

131030222121 is a wasteful number, since it uses less digits than its factorization.

131030222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14558913575 (or 14558913572 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 131030222121 its reverse (121222030131), we get a palindrome (252252252252).

The spelling of 131030222121 in words is "one hundred thirty-one billion, thirty million, two hundred twenty-two thousand, one hundred twenty-one".