1220444312 has 16 divisors (see below), whose sum is σ = 2289045840. Its totient is φ = 610032096.

The previous prime is 1220444287. The next prime is 1220444317. The reversal of 1220444312 is 2134440221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220444317) 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, 5678 + ... + 49730.

It is an arithmetic number, because the mean of its divisors is an integer number (143065365).

Almost surely, 2^1220444312 is an apocalyptic number.

It is an amenable number.

1220444312 is a deficient number, since it is larger than the sum of its proper divisors (1068601528).

1220444312 is a wasteful number, since it uses less digits than its factorization.

1220444312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47522 (or 47518 counting only the distinct ones).

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

The square root of 1220444312 is about 34934.8581219389. The cubic root of 1220444312 is about 1068.6594304108.

Adding to 1220444312 its reverse (2134440221), we get a palindrome (3354884533).

The spelling of 1220444312 in words is "one billion, two hundred twenty million, four hundred forty-four thousand, three hundred twelve".