2102021110 has 48 divisors (see below), whose sum is σ = 4633046640. Its totient is φ = 682758720.

The previous prime is 2102021107. The next prime is 2102021111. The reversal of 2102021110 is 111202012.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102021111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 103581 + ... + 122200.

It is an arithmetic number, because the mean of its divisors is an integer number (96521805).

Almost surely, 2^2102021110 is an apocalyptic number.

2102021110 is an abundant number, since it is smaller than the sum of its proper divisors (2531025530).

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

2102021110 is a wasteful number, since it uses less digits than its factorization.

2102021110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225821 (or 225814 counting only the distinct ones).

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

The square root of 2102021110 is about 45847.8037641935. The cubic root of 2102021110 is about 1280.9898572858.

Adding to 2102021110 its reverse (111202012), we get a palindrome (2213223122).

The spelling of 2102021110 in words is "two billion, one hundred two million, twenty-one thousand, one hundred ten".