202131122101 has 2 divisors, whose sum is σ = 202131122102. Its totient is φ = 202131122100.

The previous prime is 202131122057. The next prime is 202131122251. The reversal of 202131122101 is 101221131202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 198082854225 + 4048267876 = 445065^2 + 63626^2 .

It is a cyclic number.

It is not a de Polignac number, because 202131122101 - 2¹¹ = 202131120053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202131132101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101065561050 + 101065561051.

It is an arithmetic number, because the mean of its divisors is an integer number (101065561051).

Almost surely, 2^202131122101 is an apocalyptic number.

It is an amenable number.

202131122101 is a deficient number, since it is larger than the sum of its proper divisors (1).

202131122101 is an equidigital number, since it uses as much as digits as its factorization.

202131122101 is an odious number, because the sum of its binary digits is odd.

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

Adding to 202131122101 its reverse (101221131202), we get a palindrome (303352253303).

The spelling of 202131122101 in words is "two hundred two billion, one hundred thirty-one million, one hundred twenty-two thousand, one hundred one".