1221422324 has 12 divisors (see below), whose sum is σ = 2263223844. Its totient is φ = 574786944.

The previous prime is 1221422317. The next prime is 1221422327. The reversal of 1221422324 is 4232241221.

It can be written as a sum of positive squares in 2 ways, for example, as 1083594724 + 137827600 = 32918^2 + 11740^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1221422324.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221422327) 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, 8980979 + ... + 8981114.

It is an arithmetic number, because the mean of its divisors is an integer number (188601987).

Almost surely, 2^1221422324 is an apocalyptic number.

It is an amenable number.

1221422324 is a deficient number, since it is larger than the sum of its proper divisors (1041801520).

1221422324 is a wasteful number, since it uses less digits than its factorization.

1221422324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17962114 (or 17962112 counting only the distinct ones).

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

The square root of 1221422324 is about 34948.8529711634. The cubic root of 1221422324 is about 1068.9448135504.

Adding to 1221422324 its reverse (4232241221), we get a palindrome (5453663545).

The spelling of 1221422324 in words is "one billion, two hundred twenty-one million, four hundred twenty-two thousand, three hundred twenty-four".