1222232232221 has 16 divisors (see below), whose sum is σ = 1641039082368. Its totient is φ = 879128078400.

The previous prime is 1222232232197. The next prime is 1222232232223. The reversal of 1222232232221 is 1222322322221.

It is not a de Polignac number, because 1222232232221 - 2¹⁰ = 1222232231197 is a prime.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222232232223) 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, 610504610 + ... + 610506611.

It is an arithmetic number, because the mean of its divisors is an integer number (102564942648).

Almost surely, 2^{1222232232221} is an apocalyptic number.

1222232232221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1222232232221 is a deficient number, since it is larger than the sum of its proper divisors (418806850147).

1222232232221 is a wasteful number, since it uses less digits than its factorization.

1222232232221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1221011252.

The product of its digits is 4608, while the sum is 26.

Adding to 1222232232221 its reverse (1222322322221), we get a palindrome (2444554554442).

It can be divided in two parts, 1 and 222232232221, that added together give a palindrome (222232232222).

The spelling of 1222232232221 in words is "one trillion, two hundred twenty-two billion, two hundred thirty-two million, two hundred thirty-two thousand, two hundred twenty-one".