212010223321 has 4 divisors (see below), whose sum is σ = 228318702052. Its totient is φ = 195701744592.

The previous prime is 212010223309. The next prime is 212010223339. The reversal of 212010223321 is 123322010212.

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 139293168400 + 72717054921 = 373220^2 + 269661^2 .

It is a cyclic number.

It is not a de Polignac number, because 212010223321 - 2³¹ = 209862739673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212010223921) 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, 8154239346 + ... + 8154239371.

It is an arithmetic number, because the mean of its divisors is an integer number (57079675513).

Almost surely, 2^212010223321 is an apocalyptic number.

It is an amenable number.

212010223321 is a deficient number, since it is larger than the sum of its proper divisors (16308478731).

212010223321 is a wasteful number, since it uses less digits than its factorization.

212010223321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16308478730.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 212010223321 its reverse (123322010212), we get a palindrome (335332233533).

The spelling of 212010223321 in words is "two hundred twelve billion, ten million, two hundred twenty-three thousand, three hundred twenty-one".