211342330321 has 4 divisors (see below), whose sum is σ = 211356887092. Its totient is φ = 211327773552.

The previous prime is 211342330271. The next prime is 211342330343. The reversal of 211342330321 is 123033243112.

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 36802201921 + 174540128400 = 191839^2 + 417780^2 .

It is a cyclic number.

It is not a de Polignac number, because 211342330321 - 2¹⁵ = 211342297553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211342330391) 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, 7256586 + ... + 7285651.

It is an arithmetic number, because the mean of its divisors is an integer number (52839221773).

Almost surely, 2^211342330321 is an apocalyptic number.

It is an amenable number.

211342330321 is a deficient number, since it is larger than the sum of its proper divisors (14556771).

211342330321 is a wasteful number, since it uses less digits than its factorization.

211342330321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14556770.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 211342330321 its reverse (123033243112), we get a palindrome (334375573433).

The spelling of 211342330321 in words is "two hundred eleven billion, three hundred forty-two million, three hundred thirty thousand, three hundred twenty-one".