1322222144 has 14 divisors (see below), whose sum is σ = 2623784694. Its totient is φ = 661111040.

The previous prime is 1322222101. The next prime is 1322222147. The reversal of 1322222144 is 4412222231.

It can be written as a sum of positive squares in only one way, i.e., 1094815744 + 227406400 = 33088^2 + 15080^2 .

It is not an unprimeable number, because it can be changed into a prime (1322222147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10329797 + ... + 10329924.

Almost surely, 2^1322222144 is an apocalyptic number.

It is an amenable number.

1322222144 is a deficient number, since it is larger than the sum of its proper divisors (1301562550).

1322222144 is an equidigital number, since it uses as much as digits as its factorization.

1322222144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20659733 (or 20659723 counting only the distinct ones).

The product of its digits is 1536, while the sum is 23.

The square root of 1322222144 is about 36362.3726398595. The cubic root of 1322222144 is about 1097.5765224602.

Adding to 1322222144 its reverse (4412222231), we get a palindrome (5734444375).

The spelling of 1322222144 in words is "one billion, three hundred twenty-two million, two hundred twenty-two thousand, one hundred forty-four".