1212231444 has 48 divisors (see below), whose sum is σ = 3075887808. Its totient is φ = 370027008.

The previous prime is 1212231443. The next prime is 1212231451. The reversal of 1212231444 is 4441322121.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212231443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72754 + ... + 87849.

It is an arithmetic number, because the mean of its divisors is an integer number (64080996).

Almost surely, 2^1212231444 is an apocalyptic number.

It is an amenable number.

1212231444 is an abundant number, since it is smaller than the sum of its proper divisors (1863656364).

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

1212231444 is a wasteful number, since it uses less digits than its factorization.

1212231444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160664 (or 160662 counting only the distinct ones).

The product of its digits is 1536, while the sum is 24.

The square root of 1212231444 is about 34817.1142399826. The cubic root of 1212231444 is about 1066.2568845644.

Adding to 1212231444 its reverse (4441322121), we get a palindrome (5653553565).

The spelling of 1212231444 in words is "one billion, two hundred twelve million, two hundred thirty-one thousand, four hundred forty-four".