211112204131321 has 4 divisors (see below), whose sum is σ = 212018265093492. Its totient is φ = 210206143169152.

The previous prime is 211112204131319. The next prime is 211112204131369. The reversal of 211112204131321 is 123131402211112.

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

It can be written as a sum of positive squares in 2 ways, for example, as 16115696398096 + 194996507733225 = 4014436^2 + 13964115^2 .

It is a cyclic number.

It is not a de Polignac number, because 211112204131321 - 2¹ = 211112204131319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211112204131391) 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, 453030480736 + ... + 453030481201.

It is an arithmetic number, because the mean of its divisors is an integer number (53004566273373).

Almost surely, 2^{211112204131321} is an apocalyptic number.

It is an amenable number.

211112204131321 is a deficient number, since it is larger than the sum of its proper divisors (906060962171).

211112204131321 is an equidigital number, since it uses as much as digits as its factorization.

211112204131321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906060962170.

The product of its (nonzero) digits is 576, while the sum is 25.

Adding to 211112204131321 its reverse (123131402211112), we get a palindrome (334243606342433).

The spelling of 211112204131321 in words is "two hundred eleven trillion, one hundred twelve billion, two hundred four million, one hundred thirty-one thousand, three hundred twenty-one".