21003119141 has 2 divisors, whose sum is σ = 21003119142. Its totient is φ = 21003119140.

The previous prime is 21003119129. The next prime is 21003119177. The reversal of 21003119141 is 14191130012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14071890625 + 6931228516 = 118625^2 + 83254^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21003119141 is a prime.

It is a super-2 number, since 2×21003119141² (a number of 21 digits) contains 22 as substring.

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 (21003119341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10501559570 + 10501559571.

It is an arithmetic number, because the mean of its divisors is an integer number (10501559571).

Almost surely, 2^21003119141 is an apocalyptic number.

It is an amenable number.

21003119141 is a deficient number, since it is larger than the sum of its proper divisors (1).

21003119141 is an equidigital number, since it uses as much as digits as its factorization.

21003119141 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 23.

Adding to 21003119141 its reverse (14191130012), we get a palindrome (35194249153).

The spelling of 21003119141 in words is "twenty-one billion, three million, one hundred nineteen thousand, one hundred forty-one".