1210233211221 has 16 divisors (see below), whose sum is σ = 1622347740288. Its totient is φ = 802473000000.

The previous prime is 1210233211193. The next prime is 1210233211237. The reversal of 1210233211221 is 1221123320121.

It is not a de Polignac number, because 1210233211221 - 2¹¹ = 1210233209173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210233215221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1558096 + ... + 2201846.

It is an arithmetic number, because the mean of its divisors is an integer number (101396733768).

Almost surely, 2^{1210233211221} is an apocalyptic number.

It is an amenable number.

1210233211221 is a deficient number, since it is larger than the sum of its proper divisors (412114529067).

1210233211221 is a wasteful number, since it uses less digits than its factorization.

1210233211221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647132.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 1210233211221 its reverse (1221123320121), we get a palindrome (2431356531342).

The spelling of 1210233211221 in words is "one trillion, two hundred ten billion, two hundred thirty-three million, two hundred eleven thousand, two hundred twenty-one".