1222223444447 has 4 divisors (see below), whose sum is σ = 1222727872560. Its totient is φ = 1221719016336.

The previous prime is 1222223444381. The next prime is 1222223444467. The reversal of 1222223444447 is 7444443222221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1222223444447 - 2²² = 1222219250143 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222223444467) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 252210422 + ... + 252215267.

It is an arithmetic number, because the mean of its divisors is an integer number (305681968140).

Almost surely, 2^{1222223444447} is an apocalyptic number.

1222223444447 is a deficient number, since it is larger than the sum of its proper divisors (504428113).

1222223444447 is an equidigital number, since it uses as much as digits as its factorization.

1222223444447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504428112.

The product of its digits is 688128, while the sum is 41.

Adding to 1222223444447 its reverse (7444443222221), we get a palindrome (8666666666668).

The spelling of 1222223444447 in words is "one trillion, two hundred twenty-two billion, two hundred twenty-three million, four hundred forty-four thousand, four hundred forty-seven".