212413443 has 24 divisors (see below), whose sum is σ = 312120144. Its totient is φ = 128399040.

The previous prime is 212413433. The next prime is 212413463. The reversal of 212413443 is 344314212.

It is not a de Polignac number, because 212413443 - 2⁴ = 212413427 is a prime.

It is a super-2 number, since 2×212413443² = 90238941534228498, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212413433) 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 23 ways as a sum of consecutive naturals, for example, 274405 + ... + 275177.

It is an arithmetic number, because the mean of its divisors is an integer number (13005006).

Almost surely, 2^212413443 is an apocalyptic number.

212413443 is a deficient number, since it is larger than the sum of its proper divisors (99706701).

212413443 is a wasteful number, since it uses less digits than its factorization.

212413443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1555 (or 1544 counting only the distinct ones).

The product of its digits is 2304, while the sum is 24.

The square root of 212413443 is about 14574.4105541185. The cubic root of 212413443 is about 596.6605619605.

Adding to 212413443 its reverse (344314212), we get a palindrome (556727655).

The spelling of 212413443 in words is "two hundred twelve million, four hundred thirteen thousand, four hundred forty-three".