10300020121 has 2 divisors, whose sum is σ = 10300020122. Its totient is φ = 10300020120.

The previous prime is 10300020119. The next prime is 10300020127. The reversal of 10300020121 is 12102000301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8875712521 + 1424307600 = 94211^2 + 37740^2 .

It is an emirp because it is prime and its reverse (12102000301) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10300020121 - 2¹ = 10300020119 is a prime.

Together with 10300020119, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 10300020098 and 10300020107.

It is not a weakly prime, because it can be changed into another prime (10300020127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5150010060 + 5150010061.

It is an arithmetic number, because the mean of its divisors is an integer number (5150010061).

Almost surely, 2^10300020121 is an apocalyptic number.

It is an amenable number.

10300020121 is a deficient number, since it is larger than the sum of its proper divisors (1).

10300020121 is an equidigital number, since it uses as much as digits as its factorization.

10300020121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 10300020121 its reverse (12102000301), we get a palindrome (22402020422).

The spelling of 10300020121 in words is "ten billion, three hundred million, twenty thousand, one hundred twenty-one".