212022424 has 8 divisors (see below), whose sum is σ = 397542060. Its totient is φ = 106011208.

The previous prime is 212022407. The next prime is 212022427. The reversal of 212022424 is 424220212.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212022427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13251394 + ... + 13251409.

Almost surely, 2^212022424 is an apocalyptic number.

It is an amenable number.

212022424 is a deficient number, since it is larger than the sum of its proper divisors (185519636).

212022424 is a wasteful number, since it uses less digits than its factorization.

212022424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26502809 (or 26502805 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 212022424 is about 14560.9898015210. The cubic root of 212022424 is about 596.2942183510.

Adding to 212022424 its reverse (424220212), we get a palindrome (636242636).

The spelling of 212022424 in words is "two hundred twelve million, twenty-two thousand, four hundred twenty-four".