213012422 has 16 divisors (see below), whose sum is σ = 369269280. Its totient is φ = 90264768.

The previous prime is 213012421. The next prime is 213012433. The reversal of 213012422 is 224210312.

It is a self number, because there is not a number n which added to its sum of digits gives 213012422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213012421) 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, 84233 + ... + 86724.

It is an arithmetic number, because the mean of its divisors is an integer number (23079330).

Almost surely, 2^213012422 is an apocalyptic number.

213012422 is a deficient number, since it is larger than the sum of its proper divisors (156256858).

213012422 is a wasteful number, since it uses less digits than its factorization.

213012422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171055.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 213012422 is about 14594.9450838295. The cubic root of 213012422 is about 597.2208713555.

Adding to 213012422 its reverse (224210312), we get a palindrome (437222734).

The spelling of 213012422 in words is "two hundred thirteen million, twelve thousand, four hundred twenty-two".