212141321 has 4 divisors (see below), whose sum is σ = 242447232. Its totient is φ = 181835412.

The previous prime is 212141297. The next prime is 212141333. The reversal of 212141321 is 123141212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212141321 - 2²² = 207947017 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212141321.

It is not an unprimeable number, because it can be changed into a prime (212141381) 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, 15152945 + ... + 15152958.

It is an arithmetic number, because the mean of its divisors is an integer number (60611808).

Almost surely, 2^212141321 is an apocalyptic number.

It is an amenable number.

212141321 is a deficient number, since it is larger than the sum of its proper divisors (30305911).

212141321 is an equidigital number, since it uses as much as digits as its factorization.

212141321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30305910.

The product of its digits is 96, while the sum is 17.

The square root of 212141321 is about 14565.0719531350. The cubic root of 212141321 is about 596.4056599365.

Adding to 212141321 its reverse (123141212), we get a palindrome (335282533).

The spelling of 212141321 in words is "two hundred twelve million, one hundred forty-one thousand, three hundred twenty-one".