2021210110 has 16 divisors (see below), whose sum is σ = 3643322400. Its totient is φ = 807340896.

The previous prime is 2021210099. The next prime is 2021210143. The reversal of 2021210110 is 110121202.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135450 + ... + 149629.

It is an arithmetic number, because the mean of its divisors is an integer number (227707650).

Almost surely, 2^2021210110 is an apocalyptic number.

2021210110 is a deficient number, since it is larger than the sum of its proper divisors (1622112290).

2021210110 is a wasteful number, since it uses less digits than its factorization.

2021210110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285795.

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

The square root of 2021210110 is about 44957.8703899551. The cubic root of 2021210110 is about 1264.3592415952.

Adding to 2021210110 its reverse (110121202), we get a palindrome (2131331312).

The spelling of 2021210110 in words is "two billion, twenty-one million, two hundred ten thousand, one hundred ten".