1212220244 has 24 divisors (see below), whose sum is σ = 2215358208. Its totient is φ = 579302240.

The previous prime is 1212220237. The next prime is 1212220259. The reversal of 1212220244 is 4420222121.

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, 132374 + ... + 141234.

It is an arithmetic number, because the mean of its divisors is an integer number (92306592).

Almost surely, 2^1212220244 is an apocalyptic number.

It is an amenable number.

1212220244 is a deficient number, since it is larger than the sum of its proper divisors (1003137964).

1212220244 is a wasteful number, since it uses less digits than its factorization.

1212220244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10375 (or 10373 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 1212220244 is about 34816.9533991704. The cubic root of 1212220244 is about 1066.2536007817.

Adding to 1212220244 its reverse (4420222121), we get a palindrome (5632442365).

The spelling of 1212220244 in words is "one billion, two hundred twelve million, two hundred twenty thousand, two hundred forty-four".