1220301500 has 48 divisors (see below), whose sum is σ = 2907436896. Its totient is φ = 443744000.

The previous prime is 1220301499. The next prime is 1220301503. The reversal of 1220301500 is 51030221.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220301503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105437 + ... + 116436.

It is an arithmetic number, because the mean of its divisors is an integer number (60571602).

Almost surely, 2^1220301500 is an apocalyptic number.

1220301500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220301500 is an abundant number, since it is smaller than the sum of its proper divisors (1687135396).

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

1220301500 is a wasteful number, since it uses less digits than its factorization.

1220301500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221903 (or 221891 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 1220301500 is about 34932.8140864718. The cubic root of 1220301500 is about 1068.6177452250.

Adding to 1220301500 its reverse (51030221), we get a palindrome (1271331721).

The spelling of 1220301500 in words is "one billion, two hundred twenty million, three hundred one thousand, five hundred".