212205334 has 16 divisors (see below), whose sum is σ = 347846400. Its totient is φ = 96289960.

The previous prime is 212205317. The next prime is 212205341. The reversal of 212205334 is 433502212.

It is a super-2 number, since 2×212205334² = 90062207556103112, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 5127 + ... + 21229.

It is an arithmetic number, because the mean of its divisors is an integer number (21740400).

Almost surely, 2^212205334 is an apocalyptic number.

212205334 is a deficient number, since it is larger than the sum of its proper divisors (135641066).

212205334 is a wasteful number, since it uses less digits than its factorization.

212205334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16715.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 212205334 is about 14567.2692705256. The cubic root of 212205334 is about 596.4656417699.

Adding to 212205334 its reverse (433502212), we get a palindrome (645707546).

The spelling of 212205334 in words is "two hundred twelve million, two hundred five thousand, three hundred thirty-four".