321020000120 has 32 divisors (see below), whose sum is σ = 760310528400. Its totient is φ = 121649683968.

The previous prime is 321020000111. The next prime is 321020000129. The reversal of 321020000120 is 21000020123.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (321020000111) and next prime (321020000129).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321020000129) 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, 211196609 + ... + 211198128.

Almost surely, 2^321020000120 is an apocalyptic number.

It is an amenable number.

321020000120 is an abundant number, since it is smaller than the sum of its proper divisors (439290528280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

321020000120 is a wasteful number, since it uses less digits than its factorization.

321020000120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422394767 (or 422394763 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 321020000120 its reverse (21000020123), we get a palindrome (342020020243).

The spelling of 321020000120 in words is "three hundred twenty-one billion, twenty million, one hundred twenty", and thus it is an aban number.