2103220321020 has 576 divisors, whose sum is σ = 8102951141376. Its totient is φ = 429690562560.

The previous prime is 2103220321003. The next prime is 2103220321043. The reversal of 2103220321020 is 201230223012.

2103220321020 is a `hidden beast` number, since 2 + 1 + 0 + 322 + 0 + 321 + 0 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2103220320984 and 2103220321002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 127870437 + ... + 127886883.

Almost surely, 2^{2103220321020} is an apocalyptic number.

2103220321020 is a gapful number since it is divisible by the number (20) 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 2103220321020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4051475570688).

2103220321020 is an abundant number, since it is smaller than the sum of its proper divisors (5999730820356).

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

2103220321020 is a wasteful number, since it uses less digits than its factorization.

2103220321020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16730 (or 16725 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 2103220321020 its reverse (201230223012), we get a palindrome (2304450544032).

The spelling of 2103220321020 in words is "two trillion, one hundred three billion, two hundred twenty million, three hundred twenty-one thousand, twenty".