21100411210441 has 2 divisors, whose sum is σ = 21100411210442. Its totient is φ = 21100411210440.

The previous prime is 21100411210391. The next prime is 21100411210451. The reversal of 21100411210441 is 14401211400112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10880267175625 + 10220144034816 = 3298525^2 + 3196896^2 .

It is a cyclic number.

It is not a de Polignac number, because 21100411210441 - 2²⁷ = 21100276992713 is a prime.

It is not a weakly prime, because it can be changed into another prime (21100411210451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10550205605220 + 10550205605221.

It is an arithmetic number, because the mean of its divisors is an integer number (10550205605221).

Almost surely, 2^{21100411210441} is an apocalyptic number.

It is an amenable number.

21100411210441 is a deficient number, since it is larger than the sum of its proper divisors (1).

21100411210441 is an equidigital number, since it uses as much as digits as its factorization.

21100411210441 is an evil number, because the sum of its binary digits is even.

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

Adding to 21100411210441 its reverse (14401211400112), we get a palindrome (35501622610553).

The spelling of 21100411210441 in words is "twenty-one trillion, one hundred billion, four hundred eleven million, two hundred ten thousand, four hundred forty-one".