2101010211 has 8 divisors (see below), whose sum is σ = 3112607760. Its totient is φ = 1400673456.

The previous prime is 2101010147. The next prime is 2101010231. The reversal of 2101010211 is 1120101012.

It is a happy number.

It is not a de Polignac number, because 2101010211 - 2⁶ = 2101010147 is a prime.

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 = 2101010193 and 2101010202.

It is not an unprimeable number, because it can be changed into a prime (2101010231) 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, 38907570 + ... + 38907623.

It is an arithmetic number, because the mean of its divisors is an integer number (389075970).

Almost surely, 2^2101010211 is an apocalyptic number.

2101010211 is a deficient number, since it is larger than the sum of its proper divisors (1011597549).

2101010211 is an equidigital number, since it uses as much as digits as its factorization.

2101010211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77815202 (or 77815196 counting only the distinct ones).

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

The square root of 2101010211 is about 45836.7779299549. Note that the first 3 decimals coincide. The cubic root of 2101010211 is about 1280.7844741582.

Adding to 2101010211 its reverse (1120101012), we get a palindrome (3221111223).

The spelling of 2101010211 in words is "two billion, one hundred one million, ten thousand, two hundred eleven".