211121200253 has 2 divisors, whose sum is σ = 211121200254. Its totient is φ = 211121200252.

The previous prime is 211121200217. The next prime is 211121200267. The reversal of 211121200253 is 352002121112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 211109924089 + 11276164 = 459467^2 + 3358^2 .

It is a cyclic number.

It is not a de Polignac number, because 211121200253 - 2¹⁰ = 211121199229 is a prime.

It is a super-2 number, since 2×211121200253² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211121200153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105560600126 + 105560600127.

It is an arithmetic number, because the mean of its divisors is an integer number (105560600127).

Almost surely, 2^211121200253 is an apocalyptic number.

It is an amenable number.

211121200253 is a deficient number, since it is larger than the sum of its proper divisors (1).

211121200253 is an equidigital number, since it uses as much as digits as its factorization.

211121200253 is an odious number, because the sum of its binary digits is odd.

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

Adding to 211121200253 its reverse (352002121112), we get a palindrome (563123321365).

The spelling of 211121200253 in words is "two hundred eleven billion, one hundred twenty-one million, two hundred thousand, two hundred fifty-three".