1210321321211 has 16 divisors (see below), whose sum is σ = 1280690426400. Its totient is φ = 1140629299200.

The previous prime is 1210321321199. The next prime is 1210321321213. The reversal of 1210321321211 is 1121231230121.

It is a cyclic number.

It is not a de Polignac number, because 1210321321211 - 2⁶ = 1210321321147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1210321321213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4111631 + ... + 4396151.

It is an arithmetic number, because the mean of its divisors is an integer number (80043151650).

Almost surely, 2^{1210321321211} is an apocalyptic number.

1210321321211 is a deficient number, since it is larger than the sum of its proper divisors (70369105189).

1210321321211 is a wasteful number, since it uses less digits than its factorization.

1210321321211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285710.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 1210321321211 its reverse (1121231230121), we get a palindrome (2331552551332).

The spelling of 1210321321211 in words is "one trillion, two hundred ten billion, three hundred twenty-one million, three hundred twenty-one thousand, two hundred eleven".