211255133 has 2 divisors, whose sum is σ = 211255134. Its totient is φ = 211255132.

The previous prime is 211255127. The next prime is 211255153. The reversal of 211255133 is 331552112.

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., 139310809 + 71944324 = 11803^2 + 8482^2 .

It is a cyclic number.

It is not a de Polignac number, because 211255133 - 2¹⁸ = 210992989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211255099 and 211255108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211255103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105627566 + 105627567.

It is an arithmetic number, because the mean of its divisors is an integer number (105627567).

Almost surely, 2^211255133 is an apocalyptic number.

It is an amenable number.

211255133 is a deficient number, since it is larger than the sum of its proper divisors (1).

211255133 is an equidigital number, since it uses as much as digits as its factorization.

211255133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 900, while the sum is 23.

The square root of 211255133 is about 14534.6184332441. The cubic root of 211255133 is about 595.5740363174.

The spelling of 211255133 in words is "two hundred eleven million, two hundred fifty-five thousand, one hundred thirty-three".