2100411881 has 2 divisors, whose sum is σ = 2100411882. Its totient is φ = 2100411880.

The previous prime is 2100411871. The next prime is 2100411883. The reversal of 2100411881 is 1881140012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1792760281 + 307651600 = 42341^2 + 17540^2 .

It is a cyclic number.

It is not a de Polignac number, because 2100411881 - 2¹⁴ = 2100395497 is a prime.

It is a super-2 number, since 2×2100411881² = 8823460139691916322, which contains 22 as substring.

Together with 2100411883, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2100411881.

It is not a weakly prime, because it can be changed into another prime (2100411883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050205940 + 1050205941.

It is an arithmetic number, because the mean of its divisors is an integer number (1050205941).

Almost surely, 2^2100411881 is an apocalyptic number.

It is an amenable number.

2100411881 is a deficient number, since it is larger than the sum of its proper divisors (1).

2100411881 is an equidigital number, since it uses as much as digits as its factorization.

2100411881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 512, while the sum is 26.

The square root of 2100411881 is about 45830.2507193666. The cubic root of 2100411881 is about 1280.6628811379.

Adding to 2100411881 its reverse (1881140012), we get a palindrome (3981551893).

The spelling of 2100411881 in words is "two billion, one hundred million, four hundred eleven thousand, eight hundred eighty-one".