2100203210 has 48 divisors (see below), whose sum is σ = 4420094184. Its totient is φ = 716381568.

The previous prime is 2100203201. The next prime is 2100203249. The reversal of 2100203210 is 123020012.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2075986969 + 24216241 = 45563^2 + 4921^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2100203191 and 2100203200.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 85652 + ... + 107408.

Almost surely, 2^2100203210 is an apocalyptic number.

2100203210 is an abundant number, since it is smaller than the sum of its proper divisors (2319890974).

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

2100203210 is a wasteful number, since it uses less digits than its factorization.

2100203210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21975 (or 21968 counting only the distinct ones).

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

The square root of 2100203210 is about 45827.9740987969. The cubic root of 2100203210 is about 1280.6204694476.

Adding to 2100203210 its reverse (123020012), we get a palindrome (2223223222).

The spelling of 2100203210 in words is "two billion, one hundred million, two hundred three thousand, two hundred ten".