1221144105322 has 8 divisors (see below), whose sum is σ = 1834684905636. Its totient is φ = 609582470112.

The previous prime is 1221144105319. The next prime is 1221144105361. The reversal of 1221144105322 is 2235014411221.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1219476281401 + 1667823921 = 1104299^2 + 40839^2 .

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 494789733 + ... + 494792200.

Almost surely, 2^{1221144105322} is an apocalyptic number.

1221144105322 is a deficient number, since it is larger than the sum of its proper divisors (613540800314).

1221144105322 is an equidigital number, since it uses as much as digits as its factorization.

1221144105322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 989582552.

The product of its (nonzero) digits is 3840, while the sum is 28.

Adding to 1221144105322 its reverse (2235014411221), we get a palindrome (3456158516543).

The spelling of 1221144105322 in words is "one trillion, two hundred twenty-one billion, one hundred forty-four million, one hundred five thousand, three hundred twenty-two".