21000011104141 has 2 divisors, whose sum is σ = 21000011104142. Its totient is φ = 21000011104140.

The previous prime is 21000011104139. The next prime is 21000011104207. The reversal of 21000011104141 is 14140111000012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15014423774025 + 5985587330116 = 3874845^2 + 2446546^2 .

It is a cyclic number.

It is not a de Polignac number, because 21000011104141 - 2¹ = 21000011104139 is a prime.

Together with 21000011104139, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21000011101141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10500005552070 + 10500005552071.

It is an arithmetic number, because the mean of its divisors is an integer number (10500005552071).

Almost surely, 2^{21000011104141} is an apocalyptic number.

It is an amenable number.

21000011104141 is a deficient number, since it is larger than the sum of its proper divisors (1).

21000011104141 is an equidigital number, since it uses as much as digits as its factorization.

21000011104141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21000011104141 its reverse (14140111000012), we get a palindrome (35140122104153).

The spelling of 21000011104141 in words is "twenty-one trillion, eleven million, one hundred four thousand, one hundred forty-one".