2021210010 has 40 divisors (see below), whose sum is σ = 5434811316. Its totient is φ = 538989120.

The previous prime is 2021209921. The next prime is 2021210011. The reversal of 2021210010 is 100121202.

It can be written as a sum of positive squares in 2 ways, for example, as 1719180369 + 302029641 = 41463^2 + 17379^2 .

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 = 2021209974 and 2021210001.

It is not an unprimeable number, because it can be changed into a prime (2021210011) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1246851 + ... + 1248470.

Almost surely, 2^2021210010 is an apocalyptic number.

2021210010 is an abundant number, since it is smaller than the sum of its proper divisors (3413601306).

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

2021210010 is a wasteful number, since it uses less digits than its factorization.

2021210010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2495340 (or 2495331 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 2021210010 is about 44957.8692778027. The cubic root of 2021210010 is about 1264.3592207436.

Adding to 2021210010 its reverse (100121202), we get a palindrome (2121331212).

The spelling of 2021210010 in words is "two billion, twenty-one million, two hundred ten thousand, ten".