2111021210 has 8 divisors (see below), whose sum is σ = 3799838196. Its totient is φ = 844408480.

The previous prime is 2111021147. The next prime is 2111021219. The reversal of 2111021210 is 121201112.

It can be written as a sum of positive squares in 2 ways, for example, as 2021131849 + 89889361 = 44957^2 + 9481^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 2111021191 and 2111021200.

It is not an unprimeable number, because it can be changed into a prime (2111021219) 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 3 ways as a sum of consecutive naturals, for example, 105551051 + ... + 105551070.

Almost surely, 2^2111021210 is an apocalyptic number.

2111021210 is a deficient number, since it is larger than the sum of its proper divisors (1688816986).

2111021210 is a wasteful number, since it uses less digits than its factorization.

2111021210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211102128.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 2111021210 is about 45945.8508464040. The cubic root of 2111021210 is about 1282.8155004551.

Adding to 2111021210 its reverse (121201112), we get a palindrome (2232222322).

The spelling of 2111021210 in words is "two billion, one hundred eleven million, twenty-one thousand, two hundred ten".