1223000220 has 192 divisors, whose sum is σ = 3912523776. Its totient is φ = 283253760.

The previous prime is 1223000201. The next prime is 1223000279. The reversal of 1223000220 is 220003221.

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 = 1223000196 and 1223000205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 893977 + ... + 895343.

It is an arithmetic number, because the mean of its divisors is an integer number (20377728).

Almost surely, 2^1223000220 is an apocalyptic number.

1223000220 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 1223000220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1956261888).

1223000220 is an abundant number, since it is smaller than the sum of its proper divisors (2689523556).

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

1223000220 is a wasteful number, since it uses less digits than its factorization.

1223000220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1460 (or 1458 counting only the distinct ones).

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

The square root of 1223000220 is about 34971.4200455172. The cubic root of 1223000220 is about 1069.4049213877.

Adding to 1223000220 its reverse (220003221), we get a palindrome (1443003441).

The spelling of 1223000220 in words is "one billion, two hundred twenty-three million, two hundred twenty", and thus it is an aban number.