212530011 has 4 divisors (see below), whose sum is σ = 283373352. Its totient is φ = 141686672.

The previous prime is 212529973. The next prime is 212530013. The reversal of 212530011 is 110035212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 212530011 - 2¹⁴ = 212513627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212530013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35421666 + ... + 35421671.

It is an arithmetic number, because the mean of its divisors is an integer number (70843338).

Almost surely, 2^212530011 is an apocalyptic number.

212530011 is a deficient number, since it is larger than the sum of its proper divisors (70843341).

212530011 is an equidigital number, since it uses as much as digits as its factorization.

212530011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70843340.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 212530011 is about 14578.4090695796. The cubic root of 212530011 is about 596.7696868955.

Adding to 212530011 its reverse (110035212), we get a palindrome (322565223).

The spelling of 212530011 in words is "two hundred twelve million, five hundred thirty thousand, eleven".