211221213313023 has 24 divisors (see below), whose sum is σ = 305237739315600. Its totient is φ = 140749342715520.

The previous prime is 211221213312947. The next prime is 211221213313031. The reversal of 211221213313023 is 320313312122112.

211221213313023 is a `hidden beast` number, since 2 + 1 + 1 + 2 + 2 + 1 + 21 + 331 + 302 + 3 = 666.

It is not a de Polignac number, because 211221213313023 - 2⁹ = 211221213312511 is a prime.

It is a super-3 number, since 3×211221213313023³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211221213313063) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 170638528 + ... + 171871898.

It is an arithmetic number, because the mean of its divisors is an integer number (12718239138150).

Almost surely, 2^{211221213313023} is an apocalyptic number.

211221213313023 is a deficient number, since it is larger than the sum of its proper divisors (94016526002577).

211221213313023 is a wasteful number, since it uses less digits than its factorization.

211221213313023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1242119 (or 1242116 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

Adding to 211221213313023 its reverse (320313312122112), we get a palindrome (531534525435135).

The spelling of 211221213313023 in words is "two hundred eleven trillion, two hundred twenty-one billion, two hundred thirteen million, three hundred thirteen thousand, twenty-three".