1220251412 has 12 divisors (see below), whose sum is σ = 2180875200. Its totient is φ = 597144216.

The previous prime is 1220251387. The next prime is 1220251423. The reversal of 1220251412 is 2141520221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3245162 + ... + 3245537.

It is an arithmetic number, because the mean of its divisors is an integer number (181739600).

Almost surely, 2^1220251412 is an apocalyptic number.

It is an amenable number.

1220251412 is a deficient number, since it is larger than the sum of its proper divisors (960623788).

1220251412 is a wasteful number, since it uses less digits than its factorization.

1220251412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6490750 (or 6490748 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 1220251412 is about 34932.0971600618. The cubic root of 1220251412 is about 1068.6031243415.

Adding to 1220251412 its reverse (2141520221), we get a palindrome (3361771633).

The spelling of 1220251412 in words is "one billion, two hundred twenty million, two hundred fifty-one thousand, four hundred twelve".