21011230011253 has 2 divisors, whose sum is σ = 21011230011254. Its totient is φ = 21011230011252.

The previous prime is 21011230011193. The next prime is 21011230011257. The reversal of 21011230011253 is 35211003211012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11078792424324 + 9932437586929 = 3328482^2 + 3151577^2 .

It is a cyclic number.

It is not a de Polignac number, because 21011230011253 - 2¹³ = 21011230003061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21011230011257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10505615005626 + 10505615005627.

It is an arithmetic number, because the mean of its divisors is an integer number (10505615005627).

Almost surely, 2^{21011230011253} is an apocalyptic number.

It is an amenable number.

21011230011253 is a deficient number, since it is larger than the sum of its proper divisors (1).

21011230011253 is an equidigital number, since it uses as much as digits as its factorization.

21011230011253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 22.

Adding to 21011230011253 its reverse (35211003211012), we get a palindrome (56222233222265).

The spelling of 21011230011253 in words is "twenty-one trillion, eleven billion, two hundred thirty million, eleven thousand, two hundred fifty-three".