1220203030020 has 96 divisors (see below), whose sum is σ = 3706238567808. Its totient is φ = 298165251072.

The previous prime is 1220203030003. The next prime is 1220203030049. The reversal of 1220203030020 is 200303020221.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5602494 + ... + 5816213.

It is an arithmetic number, because the mean of its divisors is an integer number (38606651748).

Almost surely, 2^{1220203030020} is an apocalyptic number.

1220203030020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220203030020 is an abundant number, since it is smaller than the sum of its proper divisors (2486035537788).

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

1220203030020 is a wasteful number, since it uses less digits than its factorization.

1220203030020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11418869 (or 11418867 counting only the distinct ones).

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

Adding to 1220203030020 its reverse (200303020221), we get a palindrome (1420506050241).

The spelling of 1220203030020 in words is "one trillion, two hundred twenty billion, two hundred three million, thirty thousand, twenty".