1222124020 has 96 divisors (see below), whose sum is σ = 2829568896. Its totient is φ = 440640000.

The previous prime is 1222124011. The next prime is 1222124039. The reversal of 1222124020 is 204212221.

It is a junction number, because it is equal to n+sod(n) for n = 1222123985 and 1222124003.

It is a congruent number.

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, 3980707 + ... + 3981013.

It is an arithmetic number, because the mean of its divisors is an integer number (29474676).

Almost surely, 2^1222124020 is an apocalyptic number.

1222124020 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 1222124020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1414784448).

1222124020 is an abundant number, since it is smaller than the sum of its proper divisors (1607444876).

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

1222124020 is a wasteful number, since it uses less digits than its factorization.

1222124020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641 (or 639 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 1222124020 is about 34958.8904286163. The cubic root of 1222124020 is about 1069.1494740499.

Adding to 1222124020 its reverse (204212221), we get a palindrome (1426336241).

The spelling of 1222124020 in words is "one billion, two hundred twenty-two million, one hundred twenty-four thousand, twenty".