1244322220 has 12 divisors (see below), whose sum is σ = 2613076704. Its totient is φ = 497728880.

The previous prime is 1244322203. The next prime is 1244322239. The reversal of 1244322220 is 222234421.

It is a super-3 number, since 3×1244322220³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1244322191 and 1244322200.

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, 31108036 + ... + 31108075.

It is an arithmetic number, because the mean of its divisors is an integer number (217756392).

Almost surely, 2^1244322220 is an apocalyptic number.

1244322220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1244322220 is an abundant number, since it is smaller than the sum of its proper divisors (1368754484).

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

1244322220 is a wasteful number, since it uses less digits than its factorization.

1244322220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62216120 (or 62216118 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 1244322220 is about 35274.9517363242. The cubic root of 1244322220 is about 1075.5838818361.

Adding to 1244322220 its reverse (222234421), we get a palindrome (1466556641).

The spelling of 1244322220 in words is "one billion, two hundred forty-four million, three hundred twenty-two thousand, two hundred twenty".