211012533 has 20 divisors (see below), whose sum is σ = 318349548. Its totient is φ = 139276800.

The previous prime is 211012531. The next prime is 211012541. The reversal of 211012533 is 335210112.

It can be written as a sum of positive squares in 2 ways, for example, as 113358609 + 97653924 = 10647^2 + 9882^2 .

It is not a de Polignac number, because 211012533 - 2¹ = 211012531 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211012531) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4716 + ... + 21077.

Almost surely, 2^211012533 is an apocalyptic number.

It is an amenable number.

211012533 is a deficient number, since it is larger than the sum of its proper divisors (107337015).

211012533 is a wasteful number, since it uses less digits than its factorization.

211012533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25906 (or 25897 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 211012533 is about 14526.2704435791. The cubic root of 211012533 is about 595.3459683211.

Adding to 211012533 its reverse (335210112), we get a palindrome (546222645).

The spelling of 211012533 in words is "two hundred eleven million, twelve thousand, five hundred thirty-three".