221313332210121 has 24 divisors (see below), whose sum is σ = 326564620297344. Its totient is φ = 144364006951200.

The previous prime is 221313332210119. The next prime is 221313332210161. The reversal of 221313332210121 is 121012233313122.

221313332210121 is a `hidden beast` number, since 2 + 2 + 1 + 313 + 3 + 3 + 221 + 0 + 121 = 666.

It is not a de Polignac number, because 221313332210121 - 2¹ = 221313332210119 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (221313332210111) 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, 69117991 + ... + 72249036.

It is an arithmetic number, because the mean of its divisors is an integer number (13606859179056).

Almost surely, 2^{221313332210121} is an apocalyptic number.

It is an amenable number.

221313332210121 is a deficient number, since it is larger than the sum of its proper divisors (105251288087223).

221313332210121 is a wasteful number, since it uses less digits than its factorization.

221313332210121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141370781 (or 141370778 counting only the distinct ones).

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

Adding to 221313332210121 its reverse (121012233313122), we get a palindrome (342325565523243).

The spelling of 221313332210121 in words is "two hundred twenty-one trillion, three hundred thirteen billion, three hundred thirty-two million, two hundred ten thousand, one hundred twenty-one".