212001533 has 4 divisors (see below), whose sum is σ = 212032380. Its totient is φ = 211970688.

The previous prime is 212001523. The next prime is 212001541. The reversal of 212001533 is 335100212.

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 23406244 + 188595289 = 4838^2 + 13733^2 .

It is a cyclic number.

It is not a de Polignac number, because 212001533 - 2¹⁸ = 211739389 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 (212001523) 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, 83 + ... + 20591.

It is an arithmetic number, because the mean of its divisors is an integer number (53008095).

Almost surely, 2^212001533 is an apocalyptic number.

It is an amenable number.

212001533 is a deficient number, since it is larger than the sum of its proper divisors (30847).

212001533 is a wasteful number, since it uses less digits than its factorization.

212001533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30846.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 212001533 is about 14560.2724219020. The cubic root of 212001533 is about 596.2746330143.

Adding to 212001533 its reverse (335100212), we get a palindrome (547101745).

The spelling of 212001533 in words is "two hundred twelve million, one thousand, five hundred thirty-three".