21234101041 has 2 divisors, whose sum is σ = 21234101042. Its totient is φ = 21234101040.

The previous prime is 21234101017. The next prime is 21234101047. The reversal of 21234101041 is 14010143212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16624234225 + 4609866816 = 128935^2 + 67896^2 .

It is a cyclic number.

It is not a de Polignac number, because 21234101041 - 2²¹ = 21232003889 is a prime.

It is not a weakly prime, because it can be changed into another prime (21234101047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10617050520 + 10617050521.

It is an arithmetic number, because the mean of its divisors is an integer number (10617050521).

Almost surely, 2^21234101041 is an apocalyptic number.

It is an amenable number.

21234101041 is a deficient number, since it is larger than the sum of its proper divisors (1).

21234101041 is an equidigital number, since it uses as much as digits as its factorization.

21234101041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 21234101041 its reverse (14010143212), we get a palindrome (35244244253).

The spelling of 21234101041 in words is "twenty-one billion, two hundred thirty-four million, one hundred one thousand, forty-one".