2100323023220 has 24 divisors (see below), whose sum is σ = 4410894605544. Its totient is φ = 840088017536.

The previous prime is 2100323023177. The next prime is 2100323023237. The reversal of 2100323023220 is 223203230012.

It can be written as a sum of positive squares in 4 ways, for example, as 1061480999524 + 1038842023696 = 1030282^2 + 1019236^2 .

It is a super-2 number, since 2×2100323023220² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 2100323023192 and 2100323023201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2154707 + ... + 2973786.

It is an arithmetic number, because the mean of its divisors is an integer number (183787275231).

Almost surely, 2^{2100323023220} is an apocalyptic number.

2100323023220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2100323023220 is an abundant number, since it is smaller than the sum of its proper divisors (2310571582324).

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

2100323023220 is a wasteful number, since it uses less digits than its factorization.

2100323023220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5148979 (or 5148977 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 2100323023220 its reverse (223203230012), we get a palindrome (2323526253232).

The spelling of 2100323023220 in words is "two trillion, one hundred billion, three hundred twenty-three million, twenty-three thousand, two hundred twenty".