2103100121 has 2 divisors, whose sum is σ = 2103100122. Its totient is φ = 2103100120.

The previous prime is 2103100093. The next prime is 2103100127. The reversal of 2103100121 is 1210013012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2010266896 + 92833225 = 44836^2 + 9635^2 .

It is a cyclic number.

It is not a de Polignac number, because 2103100121 - 2²² = 2098905817 is a prime.

It is not a weakly prime, because it can be changed into another prime (2103100127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051550060 + 1051550061.

It is an arithmetic number, because the mean of its divisors is an integer number (1051550061).

Almost surely, 2^2103100121 is an apocalyptic number.

It is an amenable number.

2103100121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2103100121 is an equidigital number, since it uses as much as digits as its factorization.

2103100121 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 11.

The square root of 2103100121 is about 45859.5695684118. The cubic root of 2103100121 is about 1281.2090060063.

Adding to 2103100121 its reverse (1210013012), we get a palindrome (3313113133).

The spelling of 2103100121 in words is "two billion, one hundred three million, one hundred thousand, one hundred twenty-one".