321111211109 has 8 divisors (see below), whose sum is σ = 347722639992. Its totient is φ = 294772720320.

The previous prime is 321111211093. The next prime is 321111211111. The reversal of 321111211109 is 901112111123.

It can be written as a sum of positive squares in 4 ways, for example, as 73154020900 + 247957190209 = 270470^2 + 497953^2 .

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

It is not a de Polignac number, because 321111211109 - 2⁴ = 321111211093 is a prime.

It is a super-2 number, since 2×321111211109² (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 (321111211189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68232074 + ... + 68236779.

It is an arithmetic number, because the mean of its divisors is an integer number (43465329999).

Almost surely, 2^321111211109 is an apocalyptic number.

It is an amenable number.

321111211109 is a deficient number, since it is larger than the sum of its proper divisors (26611428883).

321111211109 is a wasteful number, since it uses less digits than its factorization.

321111211109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136469047.

The product of its (nonzero) digits is 108, while the sum is 23.

It can be divided in two parts, 3 and 21111211109, that added together give a palindrome (21111211112).

The spelling of 321111211109 in words is "three hundred twenty-one billion, one hundred eleven million, two hundred eleven thousand, one hundred nine".