211153133 has 4 divisors (see below), whose sum is σ = 220333728. Its totient is φ = 201972540.

The previous prime is 211153109. The next prime is 211153169. The reversal of 211153133 is 331351112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 211153133 - 2⁶ = 211153069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211152133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4590263 + ... + 4590308.

It is an arithmetic number, because the mean of its divisors is an integer number (55083432).

Almost surely, 2^211153133 is an apocalyptic number.

211153133 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

211153133 is a deficient number, since it is larger than the sum of its proper divisors (9180595).

211153133 is an equidigital number, since it uses as much as digits as its factorization.

211153133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9180594.

The product of its digits is 270, while the sum is 20.

The square root of 211153133 is about 14531.1091455539. The cubic root of 211153133 is about 595.4781675125.

The spelling of 211153133 in words is "two hundred eleven million, one hundred fifty-three thousand, one hundred thirty-three".