321220111221607 has 16 divisors (see below), whose sum is σ = 361300466933280. Its totient is φ = 283607283768192.

The previous prime is 321220111221557. The next prime is 321220111221641. The reversal of 321220111221607 is 706122111022123.

It is a cyclic number.

It is not a de Polignac number, because 321220111221607 - 2²⁷ = 321219977003879 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 (321220111221007) 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, 5659440088 + ... + 5659496845.

It is an arithmetic number, because the mean of its divisors is an integer number (22581279183330).

Almost surely, 2^{321220111221607} is an apocalyptic number.

321220111221607 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

321220111221607 is a deficient number, since it is larger than the sum of its proper divisors (40080355711673).

321220111221607 is a wasteful number, since it uses less digits than its factorization.

321220111221607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11318937042.

The product of its (nonzero) digits is 4032, while the sum is 31.

The spelling of 321220111221607 in words is "three hundred twenty-one trillion, two hundred twenty billion, one hundred eleven million, two hundred twenty-one thousand, six hundred seven".