321213020422 has 32 divisors (see below), whose sum is σ = 551920932864. Its totient is φ = 137345392800.

The previous prime is 321213020377. The next prime is 321213020423. The reversal of 321213020422 is 224020312123.

It is a junction number, because it is equal to n+sod(n) for n = 321213020393 and 321213020402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321213020423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32536147 + ... + 32546017.

It is an arithmetic number, because the mean of its divisors is an integer number (17247529152).

Almost surely, 2^321213020422 is an apocalyptic number.

321213020422 is a deficient number, since it is larger than the sum of its proper divisors (230707912442).

321213020422 is a wasteful number, since it uses less digits than its factorization.

321213020422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15004.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 321213020422 its reverse (224020312123), we get a palindrome (545233332545).

The spelling of 321213020422 in words is "three hundred twenty-one billion, two hundred thirteen million, twenty thousand, four hundred twenty-two".