1220250444 has 48 divisors (see below), whose sum is σ = 3257184000. Its totient is φ = 348302016.

The previous prime is 1220250439. The next prime is 1220250461. The reversal of 1220250444 is 4440520221.

It is a happy number.

It is a super-2 number, since 2×1220250444² = 2978022292164394272, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86607 + ... + 99705.

It is an arithmetic number, because the mean of its divisors is an integer number (67858000).

Almost surely, 2^1220250444 is an apocalyptic number.

1220250444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1220250444 is an abundant number, since it is smaller than the sum of its proper divisors (2036933556).

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

1220250444 is a wasteful number, since it uses less digits than its factorization.

1220250444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14222 (or 14220 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 1220250444 is about 34932.0833046070. The cubic root of 1220250444 is about 1068.6028417746.

Adding to 1220250444 its reverse (4440520221), we get a palindrome (5660770665).

The spelling of 1220250444 in words is "one billion, two hundred twenty million, two hundred fifty thousand, four hundred forty-four".