2101011210 has 40 divisors (see below), whose sum is σ = 5649387876. Its totient is φ = 560269440.

The previous prime is 2101011179. The next prime is 2101011217. The reversal of 2101011210 is 121101012.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1990319769 + 110691441 = 44613^2 + 10521^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 2101011192 and 2101011201.

It is not an unprimeable number, because it can be changed into a prime (2101011217) 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 19 ways as a sum of consecutive naturals, for example, 1296111 + ... + 1297730.

Almost surely, 2^2101011210 is an apocalyptic number.

2101011210 is an abundant number, since it is smaller than the sum of its proper divisors (3548376666).

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

2101011210 is a wasteful number, since it uses less digits than its factorization.

2101011210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2593860 (or 2593851 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 2101011210 is about 45836.7888273164. The cubic root of 2101011210 is about 1280.7846771563.

Adding to 2101011210 its reverse (121101012), we get a palindrome (2222112222).

The spelling of 2101011210 in words is "two billion, one hundred one million, eleven thousand, two hundred ten".