211210302253 has 2 divisors, whose sum is σ = 211210302254. Its totient is φ = 211210302252.

The previous prime is 211210302221. The next prime is 211210302269. The reversal of 211210302253 is 352203012112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 197707397449 + 13502904804 = 444643^2 + 116202^2 .

It is a cyclic number.

It is not a de Polignac number, because 211210302253 - 2⁵ = 211210302221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211210306253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105605151126 + 105605151127.

It is an arithmetic number, because the mean of its divisors is an integer number (105605151127).

Almost surely, 2^211210302253 is an apocalyptic number.

It is an amenable number.

211210302253 is a deficient number, since it is larger than the sum of its proper divisors (1).

211210302253 is an equidigital number, since it uses as much as digits as its factorization.

211210302253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 211210302253 its reverse (352203012112), we get a palindrome (563413314365).

The spelling of 211210302253 in words is "two hundred eleven billion, two hundred ten million, three hundred two thousand, two hundred fifty-three".