2102103121 has 2 divisors, whose sum is σ = 2102103122. Its totient is φ = 2102103120.

The previous prime is 2102103071. The next prime is 2102103137. The reversal of 2102103121 is 1213012012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1584040000 + 518063121 = 39800^2 + 22761^2 .

It is a cyclic number.

It is not a de Polignac number, because 2102103121 - 2⁷ = 2102102993 is a prime.

It is not a weakly prime, because it can be changed into another prime (2102103161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051051560 + 1051051561.

It is an arithmetic number, because the mean of its divisors is an integer number (1051051561).

Almost surely, 2^2102103121 is an apocalyptic number.

It is an amenable number.

2102103121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2102103121 is an equidigital number, since it uses as much as digits as its factorization.

2102103121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 2102103121 is about 45848.6981385513. The cubic root of 2102103121 is about 1281.0065164735.

Adding to 2102103121 its reverse (1213012012), we get a palindrome (3315115133).

The spelling of 2102103121 in words is "two billion, one hundred two million, one hundred three thousand, one hundred twenty-one".