212153 has 4 divisors (see below), whose sum is σ = 213108. Its totient is φ = 211200.

The previous prime is 212141. The next prime is 212161. The reversal of 212153 is 351212.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 135424 + 76729 = 368^2 + 277^2 .

It is a cyclic number.

It is not a de Polignac number, because 212153 - 2¹⁰ = 211129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53 + ... + 653.

It is an arithmetic number, because the mean of its divisors is an integer number (53277).

2²¹²¹⁵³ is an apocalyptic number.

It is an amenable number.

212153 is a deficient number, since it is larger than the sum of its proper divisors (955).

212153 is an equidigital number, since it uses as much as digits as its factorization.

212153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 954.

The product of its digits is 60, while the sum is 14.

The square root of 212153 is about 460.6006947455. The cubic root of 212153 is about 59.6416604361.

Adding to 212153 its reverse (351212), we get a palindrome (563365).

The spelling of 212153 in words is "two hundred twelve thousand, one hundred fifty-three".