1222131112221 has 8 divisors (see below), whose sum is σ = 1629740931264. Its totient is φ = 814637684000.

The previous prime is 1222131112211. The next prime is 1222131112229. The reversal of 1222131112221 is 1222111312221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1222131112221 - 2¹¹ = 1222131110173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222131112229) 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 7 ways as a sum of consecutive naturals, for example, 29073201 + ... + 29115206.

It is an arithmetic number, because the mean of its divisors is an integer number (203717616408).

Almost surely, 2^{1222131112221} is an apocalyptic number.

It is an amenable number.

1222131112221 is a deficient number, since it is larger than the sum of its proper divisors (407609819043).

1222131112221 is an equidigital number, since it uses as much as digits as its factorization.

1222131112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58195411.

The product of its digits is 192, while the sum is 21.

Adding to 1222131112221 its reverse (1222111312221), we get a palindrome (2444242424442).

The spelling of 1222131112221 in words is "one trillion, two hundred twenty-two billion, one hundred thirty-one million, one hundred twelve thousand, two hundred twenty-one".