2102411281 has 2 divisors, whose sum is σ = 2102411282. Its totient is φ = 2102411280.

The previous prime is 2102411273. The next prime is 2102411287. The reversal of 2102411281 is 1821142012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1882778881 + 219632400 = 43391^2 + 14820^2 .

It is a cyclic number.

It is not a de Polignac number, because 2102411281 - 2³ = 2102411273 is a prime.

It is a super-2 number, since 2×2102411281² = 8840266388952121922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2102411287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051205640 + 1051205641.

It is an arithmetic number, because the mean of its divisors is an integer number (1051205641).

Almost surely, 2^2102411281 is an apocalyptic number.

It is an amenable number.

2102411281 is a deficient number, since it is larger than the sum of its proper divisors (1).

2102411281 is an equidigital number, since it uses as much as digits as its factorization.

2102411281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 22.

The square root of 2102411281 is about 45852.0586342642. The cubic root of 2102411281 is about 1281.0691102439.

Adding to 2102411281 its reverse (1821142012), we get a palindrome (3923553293).

The spelling of 2102411281 in words is "two billion, one hundred two million, four hundred eleven thousand, two hundred eighty-one".