1222211324448 has 36 divisors (see below), whose sum is σ = 3475663454718. Its totient is φ = 407403774720.

The previous prime is 1222211324401. The next prime is 1222211324449. The reversal of 1222211324448 is 8444231122221.

It can be written as a sum of positive squares in only one way, i.e., 671724489744 + 550486834704 = 819588^2 + 741948^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1222211324449) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2121894373 + ... + 2121894948.

Almost surely, 2^{1222211324448} is an apocalyptic number.

1222211324448 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1222211324448 is an abundant number, since it is smaller than the sum of its proper divisors (2253452130270).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1222211324448 is a wasteful number, since it uses less digits than its factorization.

1222211324448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4243789337 (or 4243789326 counting only the distinct ones).

The product of its digits is 49152, while the sum is 36.

Adding to 1222211324448 its reverse (8444231122221), we get a palindrome (9666442446669).

The spelling of 1222211324448 in words is "one trillion, two hundred twenty-two billion, two hundred eleven million, three hundred twenty-four thousand, four hundred forty-eight".