2103120300121 has 2 divisors, whose sum is σ = 2103120300122. Its totient is φ = 2103120300120.

The previous prime is 2103120300097. The next prime is 2103120300133. The reversal of 2103120300121 is 1210030213012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1573920793600 + 529199506521 = 1254560^2 + 727461^2 .

It is a cyclic number.

It is not a de Polignac number, because 2103120300121 - 2¹⁹ = 2103119775833 is a prime.

It is a super-2 number, since 2×2103120300121² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2103120300095 and 2103120300104.

It is not a weakly prime, because it can be changed into another prime (2103120300181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051560150060 + 1051560150061.

It is an arithmetic number, because the mean of its divisors is an integer number (1051560150061).

Almost surely, 2^{2103120300121} is an apocalyptic number.

It is an amenable number.

2103120300121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2103120300121 is an equidigital number, since it uses as much as digits as its factorization.

2103120300121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 2103120300121 its reverse (1210030213012), we get a palindrome (3313150513133).

The spelling of 2103120300121 in words is "two trillion, one hundred three billion, one hundred twenty million, three hundred thousand, one hundred twenty-one".