211021002001253 has 2 divisors, whose sum is σ = 211021002001254. Its totient is φ = 211021002001252.

The previous prime is 211021002001207. The next prime is 211021002001273. The reversal of 211021002001253 is 352100200120112.

It is an a-pointer prime, because the next prime (211021002001273) can be obtained adding 211021002001253 to its sum of digits (20).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 184908677160769 + 26112324840484 = 13598113^2 + 5110022^2 .

It is a cyclic number.

It is not a de Polignac number, because 211021002001253 - 2⁸ = 211021002000997 is a prime.

It is a super-2 number, since 2×211021002001253² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211021002001273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105510501000626 + 105510501000627.

It is an arithmetic number, because the mean of its divisors is an integer number (105510501000627).

Almost surely, 2^{211021002001253} is an apocalyptic number.

It is an amenable number.

211021002001253 is a deficient number, since it is larger than the sum of its proper divisors (1).

211021002001253 is an equidigital number, since it uses as much as digits as its factorization.

211021002001253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 211021002001253 its reverse (352100200120112), we get a palindrome (563121202121365).

The spelling of 211021002001253 in words is "two hundred eleven trillion, twenty-one billion, two million, one thousand, two hundred fifty-three".