2102322121 has 2 divisors, whose sum is σ = 2102322122. Its totient is φ = 2102322120.

The previous prime is 2102322083. The next prime is 2102322139. The reversal of 2102322121 is 1212232012.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1684692025 + 417630096 = 41045^2 + 20436^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2102322121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2102322095 and 2102322104.

It is not a weakly prime, because it can be changed into another prime (2102322151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051161060 + 1051161061.

It is an arithmetic number, because the mean of its divisors is an integer number (1051161061).

Almost surely, 2^2102322121 is an apocalyptic number.

It is an amenable number.

2102322121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2102322121 is an equidigital number, since it uses as much as digits as its factorization.

2102322121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 2102322121 is about 45851.0863666282. The cubic root of 2102322121 is about 1281.0510006035.

Adding to 2102322121 its reverse (1212232012), we get a palindrome (3314554133).

The spelling of 2102322121 in words is "two billion, one hundred two million, three hundred twenty-two thousand, one hundred twenty-one".