321213029999 has 8 divisors (see below), whose sum is σ = 335226332160. Its totient is φ = 307203687736.

The previous prime is 321213029987. The next prime is 321213030001. The reversal of 321213029999 is 999920312123.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 321213029999 - 2⁴ = 321213029983 is a prime.

It is a super-2 number, since 2×321213029999² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321213026999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 823607 + ... + 1149240.

It is an arithmetic number, because the mean of its divisors is an integer number (41903291520).

Almost surely, 2^321213029999 is an apocalyptic number.

321213029999 is a deficient number, since it is larger than the sum of its proper divisors (14013302161).

321213029999 is a wasteful number, since it uses less digits than its factorization.

321213029999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1979949.

The product of its (nonzero) digits is 472392, while the sum is 50.

The spelling of 321213029999 in words is "three hundred twenty-one billion, two hundred thirteen million, twenty-nine thousand, nine hundred ninety-nine".