212321422 has 16 divisors (see below), whose sum is σ = 320850432. Its totient is φ = 105374520.

The previous prime is 212321413. The next prime is 212321443. The reversal of 212321422 is 224123212.

212321422 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 212321422.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 261397 + ... + 262207.

It is an arithmetic number, because the mean of its divisors is an integer number (20053152).

Almost surely, 2^212321422 is an apocalyptic number.

212321422 is a deficient number, since it is larger than the sum of its proper divisors (108529010).

212321422 is a wasteful number, since it uses less digits than its factorization.

212321422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1623.

The product of its digits is 384, while the sum is 19.

The square root of 212321422 is about 14571.2532748559. The cubic root of 212321422 is about 596.5743884564.

Adding to 212321422 its reverse (224123212), we get a palindrome (436444634).

The spelling of 212321422 in words is "two hundred twelve million, three hundred twenty-one thousand, four hundred twenty-two".