141212321 has 4 divisors (see below), whose sum is σ = 141342612. Its totient is φ = 141082032.

The previous prime is 141212317. The next prime is 141212333. The reversal of 141212321 is 123212141.

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 128709025 + 12503296 = 11345^2 + 3536^2 .

It is a cyclic number.

It is not a de Polignac number, because 141212321 - 2² = 141212317 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 141212321.

It is not an unprimeable number, because it can be changed into a prime (141212381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63506 + ... + 65691.

It is an arithmetic number, because the mean of its divisors is an integer number (35335653).

Almost surely, 2^141212321 is an apocalyptic number.

It is an amenable number.

141212321 is a deficient number, since it is larger than the sum of its proper divisors (130291).

141212321 is a wasteful number, since it uses less digits than its factorization.

141212321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130290.

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

The square root of 141212321 is about 11883.2790508344. The cubic root of 141212321 is about 520.7439069135.

Adding to 141212321 its reverse (123212141), we get a palindrome (264424462).

The spelling of 141212321 in words is "one hundred forty-one million, two hundred twelve thousand, three hundred twenty-one".