2103220100 has 18 divisors (see below), whose sum is σ = 4563987834. Its totient is φ = 841288000.

The previous prime is 2103220087. The next prime is 2103220103. The reversal of 2103220100 is 10223012.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 263153284 + 1840066816 = 16222^2 + 42896^2 .

It is not an unprimeable number, because it can be changed into a prime (2103220103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10516001 + ... + 10516200.

Almost surely, 2^2103220100 is an apocalyptic number.

2103220100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2103220100 is an abundant number, since it is smaller than the sum of its proper divisors (2460767734).

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

2103220100 is a wasteful number, since it uses less digits than its factorization.

2103220100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21032215 (or 21032208 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 2103220100 is about 45860.8776627748. The cubic root of 2103220100 is about 1281.2333692864.

Adding to 2103220100 its reverse (10223012), we get a palindrome (2113443112).

The spelling of 2103220100 in words is "two billion, one hundred three million, two hundred twenty thousand, one hundred".