21130251141053 has 2 divisors, whose sum is σ = 21130251141054. Its totient is φ = 21130251141052.

The previous prime is 21130251141031. The next prime is 21130251141133. The reversal of 21130251141053 is 35014115203112.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15342747988324 + 5787503152729 = 3916982^2 + 2405723^2 .

It is a cyclic number.

It is not a de Polignac number, because 21130251141053 - 2¹² = 21130251136957 is a prime.

It is a super-3 number, since 3×21130251141053³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21130251141553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10565125570526 + 10565125570527.

It is an arithmetic number, because the mean of its divisors is an integer number (10565125570527).

Almost surely, 2^{21130251141053} is an apocalyptic number.

It is an amenable number.

21130251141053 is a deficient number, since it is larger than the sum of its proper divisors (1).

21130251141053 is an equidigital number, since it uses as much as digits as its factorization.

21130251141053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 29.

Adding to 21130251141053 its reverse (35014115203112), we get a palindrome (56144366344165).

The spelling of 21130251141053 in words is "twenty-one trillion, one hundred thirty billion, two hundred fifty-one million, one hundred forty-one thousand, fifty-three".