212011102321 has 4 divisors (see below), whose sum is σ = 224482343652. Its totient is φ = 199539860992.

The previous prime is 212011102319. The next prime is 212011102363. The reversal of 212011102321 is 123201110212.

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 91557682225 + 120453420096 = 302585^2 + 347064^2 .

It is a cyclic number.

It is not a de Polignac number, because 212011102321 - 2¹ = 212011102319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212011102295 and 212011102304.

It is not an unprimeable number, because it can be changed into a prime (212011102021) 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, 6235620640 + ... + 6235620673.

It is an arithmetic number, because the mean of its divisors is an integer number (56120585913).

Almost surely, 2^212011102321 is an apocalyptic number.

It is an amenable number.

212011102321 is a deficient number, since it is larger than the sum of its proper divisors (12471241331).

212011102321 is a wasteful number, since it uses less digits than its factorization.

212011102321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12471241330.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 212011102321 its reverse (123201110212), we get a palindrome (335212212533).

The spelling of 212011102321 in words is "two hundred twelve billion, eleven million, one hundred two thousand, three hundred twenty-one".