131300222021 has 2 divisors, whose sum is σ = 131300222022. Its totient is φ = 131300222020.

The previous prime is 131300222017. The next prime is 131300222059. The reversal of 131300222021 is 120222003131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94319008996 + 36981213025 = 307114^2 + 192305^2 .

It is a cyclic number.

It is not a de Polignac number, because 131300222021 - 2² = 131300222017 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131300227021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65650111010 + 65650111011.

It is an arithmetic number, because the mean of its divisors is an integer number (65650111011).

Almost surely, 2^131300222021 is an apocalyptic number.

It is an amenable number.

131300222021 is a deficient number, since it is larger than the sum of its proper divisors (1).

131300222021 is an equidigital number, since it uses as much as digits as its factorization.

131300222021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 131300222021 its reverse (120222003131), we get a palindrome (251522225152).

The spelling of 131300222021 in words is "one hundred thirty-one billion, three hundred million, two hundred twenty-two thousand, twenty-one".