321221311201111 has 16 divisors (see below), whose sum is σ = 332254297267200. Its totient is φ = 310230740030400.

The previous prime is 321221311201103. The next prime is 321221311201139. The reversal of 321221311201111 is 111102113122123.

It is a cyclic number.

It is not a de Polignac number, because 321221311201111 - 2³ = 321221311201103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321221311201211) 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, 36456331 + ... + 44401651.

It is an arithmetic number, because the mean of its divisors is an integer number (20765893579200).

Almost surely, 2^{321221311201111} is an apocalyptic number.

321221311201111 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

321221311201111 is a deficient number, since it is larger than the sum of its proper divisors (11032986066089).

321221311201111 is a wasteful number, since it uses less digits than its factorization.

321221311201111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7947990.

The product of its (nonzero) digits is 144, while the sum is 22.

Adding to 321221311201111 its reverse (111102113122123), we get a palindrome (432323424323234).

The spelling of 321221311201111 in words is "three hundred twenty-one trillion, two hundred twenty-one billion, three hundred eleven million, two hundred one thousand, one hundred eleven".