1223302020 has 24 divisors (see below), whose sum is σ = 3425245824. Its totient is φ = 326213856.

The previous prime is 1223301971. The next prime is 1223302027. The reversal of 1223302020 is 202033221.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (1223302027) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 10194124 + ... + 10194243.

It is an arithmetic number, because the mean of its divisors is an integer number (142718576).

Almost surely, 2^1223302020 is an apocalyptic number.

1223302020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1223302020 is an abundant number, since it is smaller than the sum of its proper divisors (2201943804).

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

1223302020 is a wasteful number, since it uses less digits than its factorization.

1223302020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20388379 (or 20388377 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 1223302020 is about 34975.7347313820. The cubic root of 1223302020 is about 1069.4928799057.

Adding to 1223302020 its reverse (202033221), we get a palindrome (1425335241).

The spelling of 1223302020 in words is "one billion, two hundred twenty-three million, three hundred two thousand, twenty".