210323133132121 has 2 divisors, whose sum is σ = 210323133132122. Its totient is φ = 210323133132120.

The previous prime is 210323133132113. The next prime is 210323133132149. The reversal of 210323133132121 is 121231331323012.

It is an a-pointer prime, because the next prime (210323133132149) can be obtained adding 210323133132121 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 181534124371600 + 28789008760521 = 13473460^2 + 5365539^2 .

It is a cyclic number.

It is not a de Polignac number, because 210323133132121 - 2³ = 210323133132113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 210323133132121.

It is not a weakly prime, because it can be changed into another prime (210323133132421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105161566566060 + 105161566566061.

It is an arithmetic number, because the mean of its divisors is an integer number (105161566566061).

Almost surely, 2^{210323133132121} is an apocalyptic number.

It is an amenable number.

210323133132121 is a deficient number, since it is larger than the sum of its proper divisors (1).

210323133132121 is an equidigital number, since it uses as much as digits as its factorization.

210323133132121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 28.

Adding to 210323133132121 its reverse (121231331323012), we get a palindrome (331554464455133).

The spelling of 210323133132121 in words is "two hundred ten trillion, three hundred twenty-three billion, one hundred thirty-three million, one hundred thirty-two thousand, one hundred twenty-one".