212043522 has 32 divisors (see below), whose sum is σ = 442958400. Its totient is φ = 67601088.

The previous prime is 212043521. The next prime is 212043529. The reversal of 212043522 is 225340212.

It is not an unprimeable number, because it can be changed into a prime (212043521) 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 15 ways as a sum of consecutive naturals, for example, 5004 + ... + 21192.

It is an arithmetic number, because the mean of its divisors is an integer number (13842450).

Almost surely, 2^212043522 is an apocalyptic number.

212043522 is an abundant number, since it is smaller than the sum of its proper divisors (230914878).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212043522 is a wasteful number, since it uses less digits than its factorization.

212043522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16290.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 212043522 is about 14561.7142534799. The cubic root of 212043522 is about 596.3139964448.

Adding to 212043522 its reverse (225340212), we get a palindrome (437383734).

The spelling of 212043522 in words is "two hundred twelve million, forty-three thousand, five hundred twenty-two".