212011424 has 48 divisors (see below), whose sum is σ = 458498880. Its totient is φ = 96053760.

The previous prime is 212011421. The next prime is 212011427. The reversal of 212011424 is 424110212.

It is an interprime number because it is at equal distance from previous prime (212011421) and next prime (212011427).

It is not an unprimeable number, because it can be changed into a prime (212011421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6404 + ... + 21564.

It is an arithmetic number, because the mean of its divisors is an integer number (9552060).

Almost surely, 2^212011424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212011424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (229249440).

212011424 is an abundant number, since it is smaller than the sum of its proper divisors (246487456).

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

212011424 is a wasteful number, since it uses less digits than its factorization.

212011424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15213 (or 15205 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 212011424 is about 14560.6120750468. The cubic root of 212011424 is about 596.2839059986.

Adding to 212011424 its reverse (424110212), we get a palindrome (636121636).

The spelling of 212011424 in words is "two hundred twelve million, eleven thousand, four hundred twenty-four".