2101200100210 has 16 divisors (see below), whose sum is σ = 3824656363800. Its totient is φ = 831036443776.

The previous prime is 2101200100157. The next prime is 2101200100211. The reversal of 2101200100210 is 120010021012.

It can be written as a sum of positive squares in 4 ways, for example, as 985745165409 + 1115454934801 = 992847^2 + 1056151^2 .

It is a super-2 number, since 2×2101200100210² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (2101200100211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1180448605 + ... + 1180450384.

Almost surely, 2^{2101200100210} is an apocalyptic number.

2101200100210 is a deficient number, since it is larger than the sum of its proper divisors (1723456263590).

2101200100210 is a wasteful number, since it uses less digits than its factorization.

2101200100210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2360899085.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 2101200100210 its reverse (120010021012), we get a palindrome (2221210121222).

The spelling of 2101200100210 in words is "two trillion, one hundred one billion, two hundred million, one hundred thousand, two hundred ten".