321212120030 has 32 divisors (see below), whose sum is σ = 614371223520. Its totient is φ = 120496552960.

The previous prime is 321212120023. The next prime is 321212120041. The reversal of 321212120030 is 30021212123.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 321212119990 and 321212120008.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3314300 + ... + 3409839.

It is an arithmetic number, because the mean of its divisors is an integer number (19199100735).

Almost surely, 2^321212120030 is an apocalyptic number.

321212120030 is a deficient number, since it is larger than the sum of its proper divisors (293159103490).

321212120030 is a wasteful number, since it uses less digits than its factorization.

321212120030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6724444.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 321212120030 its reverse (30021212123), we get a palindrome (351233332153).

The spelling of 321212120030 in words is "three hundred twenty-one billion, two hundred twelve million, one hundred twenty thousand, thirty".