212103231321 has 8 divisors (see below), whose sum is σ = 282848024160. Its totient is φ = 141380296352.

The previous prime is 212103231199. The next prime is 212103231337. The reversal of 212103231321 is 123132301212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212103231321 - 2²¹ = 212101134169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212103230321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5441811 + ... + 5480648.

It is an arithmetic number, because the mean of its divisors is an integer number (35356003020).

Almost surely, 2^212103231321 is an apocalyptic number.

It is an amenable number.

212103231321 is a deficient number, since it is larger than the sum of its proper divisors (70744792839).

212103231321 is a wasteful number, since it uses less digits than its factorization.

212103231321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10928935.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 212103231321 its reverse (123132301212), we get a palindrome (335235532533).

The spelling of 212103231321 in words is "two hundred twelve billion, one hundred three million, two hundred thirty-one thousand, three hundred twenty-one".