1240221412 has 24 divisors (see below), whose sum is σ = 2223624312. Its totient is φ = 605030400.

The previous prime is 1240221403. The next prime is 1240221457. The reversal of 1240221412 is 2141220421.

It can be written as a sum of positive squares in 4 ways, for example, as 11999296 + 1228222116 = 3464^2 + 35046^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1240221412.

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, 22212 + ... + 54532.

It is an arithmetic number, because the mean of its divisors is an integer number (92651013).

Almost surely, 2^1240221412 is an apocalyptic number.

It is an amenable number.

1240221412 is a deficient number, since it is larger than the sum of its proper divisors (983402900).

1240221412 is a wasteful number, since it uses less digits than its factorization.

1240221412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32559 (or 32557 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 1240221412 is about 35216.7774221322. Note that the first 3 decimals coincide. The cubic root of 1240221412 is about 1074.4010110328.

Adding to 1240221412 its reverse (2141220421), we get a palindrome (3381441833).

Subtracting 1240221412 from its reverse (2141220421), we obtain a palindrome (900999009).

The spelling of 1240221412 in words is "one billion, two hundred forty million, two hundred twenty-one thousand, four hundred twelve".