321212422 has 4 divisors (see below), whose sum is σ = 481818636. Its totient is φ = 160606210.

The previous prime is 321212417. The next prime is 321212453. The reversal of 321212422 is 224212123.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 224212123 = 13649 ⋅16427.

It is a self number, because there is not a number n which added to its sum of digits gives 321212422.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80303104 + ... + 80303107.

It is an arithmetic number, because the mean of its divisors is an integer number (120454659).

Almost surely, 2^321212422 is an apocalyptic number.

321212422 is a deficient number, since it is larger than the sum of its proper divisors (160606214).

321212422 is a wasteful number, since it uses less digits than its factorization.

321212422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160606213.

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

The square root of 321212422 is about 17922.4000066955. The cubic root of 321212422 is about 684.8531285093.

Adding to 321212422 its reverse (224212123), we get a palindrome (545424545).

It can be divided in two parts, 32121 and 2422, that added together give a palindrome (34543).

The spelling of 321212422 in words is "three hundred twenty-one million, two hundred twelve thousand, four hundred twenty-two".