21004010141 has 2 divisors, whose sum is σ = 21004010142. Its totient is φ = 21004010140.

The previous prime is 21004010117. The next prime is 21004010173. The reversal of 21004010141 is 14101040012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17528436025 + 3475574116 = 132395^2 + 58954^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21004010141 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21004010101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10502005070 + 10502005071.

It is an arithmetic number, because the mean of its divisors is an integer number (10502005071).

Almost surely, 2^21004010141 is an apocalyptic number.

It is an amenable number.

21004010141 is a deficient number, since it is larger than the sum of its proper divisors (1).

21004010141 is an equidigital number, since it uses as much as digits as its factorization.

21004010141 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 14.

Adding to 21004010141 its reverse (14101040012), we get a palindrome (35105050153).

The spelling of 21004010141 in words is "twenty-one billion, four million, ten thousand, one hundred forty-one".