321312112211011 has 4 divisors (see below), whose sum is σ = 322037421719832. Its totient is φ = 320586802702192.

The previous prime is 321312112210961. The next prime is 321312112211029. The reversal of 321312112211011 is 110112211213123.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 321312112211011 - 2¹³ = 321312112202819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321312112211411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 362654753746 + ... + 362654754631.

It is an arithmetic number, because the mean of its divisors is an integer number (80509355429958).

Almost surely, 2^{321312112211011} is an apocalyptic number.

321312112211011 is a deficient number, since it is larger than the sum of its proper divisors (725309508821).

321312112211011 is an equidigital number, since it uses as much as digits as its factorization.

321312112211011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725309508820.

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

Adding to 321312112211011 its reverse (110112211213123), we get a palindrome (431424323424134).

The spelling of 321312112211011 in words is "three hundred twenty-one trillion, three hundred twelve billion, one hundred twelve million, two hundred eleven thousand, eleven".