321404212321321 has 32 divisors (see below), whose sum is σ = 339901445145600. Its totient is φ = 303441008532480.

The previous prime is 321404212321303. The next prime is 321404212321393. The reversal of 321404212321321 is 123123212404123.

It is a cyclic number.

It is not a de Polignac number, because 321404212321321 - 2⁵ = 321404212321289 is a prime.

It is a super-2 number, since 2×321404212321321² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321404212321921) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3373247760 + ... + 3373343038.

It is an arithmetic number, because the mean of its divisors is an integer number (10621920160800).

Almost surely, 2^{321404212321321} is an apocalyptic number.

It is an amenable number.

321404212321321 is a deficient number, since it is larger than the sum of its proper divisors (18497232824279).

321404212321321 is a wasteful number, since it uses less digits than its factorization.

321404212321321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102729.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 321404212321321 its reverse (123123212404123), we get a palindrome (444527424725444).

The spelling of 321404212321321 in words is "three hundred twenty-one trillion, four hundred four billion, two hundred twelve million, three hundred twenty-one thousand, three hundred twenty-one".