1222344432221 has 54 divisors (see below), whose sum is σ = 1385828231886. Its totient is φ = 1077227712000.

The previous prime is 1222344432217. The next prime is 1222344432223.

1222344432221 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 9 ways, for example, as 3835324900 + 1218509107321 = 61930^2 + 1103861^2 .

It is not a de Polignac number, because 1222344432221 - 2² = 1222344432217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222344432223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 8922222065 + ... + 8922222201.

Almost surely, 2^{1222344432221} is an apocalyptic number.

1222344432221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1222344432221 is a deficient number, since it is larger than the sum of its proper divisors (163483799665).

1222344432221 is an equidigital number, since it uses as much as digits as its factorization.

1222344432221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543 (or 322 counting only the distinct ones).

The product of its digits is 36864, while the sum is 32.

It can be divided in two parts, 12223 and 44432221, that added together give a palindrome (44444444).

The spelling of 1222344432221 in words is "one trillion, two hundred twenty-two billion, three hundred forty-four million, four hundred thirty-two thousand, two hundred twenty-one".