1222003020 has 96 divisors (see below), whose sum is σ = 3920265216. Its totient is φ = 278611200.

The previous prime is 1222003009. The next prime is 1222003039. The reversal of 1222003020 is 203002221.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1222002987 and 1222003005.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 173365 + ... + 180275.

It is an arithmetic number, because the mean of its divisors is an integer number (40836096).

Almost surely, 2^1222003020 is an apocalyptic number.

1222003020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222003020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1960132608).

1222003020 is an abundant number, since it is smaller than the sum of its proper divisors (2698262196).

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

1222003020 is a wasteful number, since it uses less digits than its factorization.

1222003020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7351 (or 7349 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 1222003020 is about 34957.1597816527. The cubic root of 1222003020 is about 1069.1141881177.

Adding to 1222003020 its reverse (203002221), we get a palindrome (1425005241).

The spelling of 1222003020 in words is "one billion, two hundred twenty-two million, three thousand, twenty".