1222244020 has 24 divisors (see below), whose sum is σ = 2583945000. Its totient is φ = 485615232.

The previous prime is 1222243963. The next prime is 1222244033. The reversal of 1222244020 is 204422221.

It can be written as a sum of positive squares in 4 ways, for example, as 1999396 + 1220244624 = 1414^2 + 34932^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202095 + ... + 208054.

It is an arithmetic number, because the mean of its divisors is an integer number (107664375).

Almost surely, 2^1222244020 is an apocalyptic number.

1222244020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222244020 is an abundant number, since it is smaller than the sum of its proper divisors (1361700980).

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

1222244020 is a wasteful number, since it uses less digits than its factorization.

1222244020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410307 (or 410305 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 1222244020 is about 34960.6066880997. The cubic root of 1222244020 is about 1069.1844660627.

Adding to 1222244020 its reverse (204422221), we get a palindrome (1426666241).

The spelling of 1222244020 in words is "one billion, two hundred twenty-two million, two hundred forty-four thousand, twenty".