103231312002121 has 2 divisors, whose sum is σ = 103231312002122. Its totient is φ = 103231312002120.

The previous prime is 103231312002061. The next prime is 103231312002127. The reversal of 103231312002121 is 121200213132301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100258667055625 + 2972644946496 = 10012925^2 + 1724136^2 .

It is a cyclic number.

It is not a de Polignac number, because 103231312002121 - 2²⁷ = 103231177784393 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 103231312002092 and 103231312002101.

It is not a weakly prime, because it can be changed into another prime (103231312002127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51615656001060 + 51615656001061.

It is an arithmetic number, because the mean of its divisors is an integer number (51615656001061).

Almost surely, 2^{103231312002121} is an apocalyptic number.

It is an amenable number.

103231312002121 is a deficient number, since it is larger than the sum of its proper divisors (1).

103231312002121 is an equidigital number, since it uses as much as digits as its factorization.

103231312002121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 103231312002121 its reverse (121200213132301), we get a palindrome (224431525134422).

The spelling of 103231312002121 in words is "one hundred three trillion, two hundred thirty-one billion, three hundred twelve million, two thousand, one hundred twenty-one".