1212312444 has 24 divisors (see below), whose sum is σ = 3232833408. Its totient is φ = 346374960.

The previous prime is 1212312427. The next prime is 1212312463. The reversal of 1212312444 is 4442132121.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7216062 + ... + 7216229.

It is an arithmetic number, because the mean of its divisors is an integer number (134701392).

Almost surely, 2^1212312444 is an apocalyptic number.

1212312444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1212312444 is an abundant number, since it is smaller than the sum of its proper divisors (2020520964).

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

1212312444 is a wasteful number, since it uses less digits than its factorization.

1212312444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14432305 (or 14432303 counting only the distinct ones).

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

The square root of 1212312444 is about 34818.2774415967. The cubic root of 1212312444 is about 1066.2806327478.

Adding to 1212312444 its reverse (4442132121), we get a palindrome (5654444565).

The spelling of 1212312444 in words is "one billion, two hundred twelve million, three hundred twelve thousand, four hundred forty-four".