4021021210 has 8 divisors (see below), whose sum is σ = 7237838196. Its totient is φ = 1608408480.

The previous prime is 4021021201. The next prime is 4021021217. The reversal of 4021021210 is 121201204.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3919636449 + 101384761 = 62607^2 + 10069^2 .

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

It is a super-2 number, since 2×4021021210² = 32337223142539728200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4021021217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201051051 + ... + 201051070.

Almost surely, 2^4021021210 is an apocalyptic number.

4021021210 is a deficient number, since it is larger than the sum of its proper divisors (3216816986).

4021021210 is a wasteful number, since it uses less digits than its factorization.

4021021210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402102128.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 4021021210 is about 63411.5226910693. The cubic root of 4021021210 is about 1590.1769524723.

Adding to 4021021210 its reverse (121201204), we get a palindrome (4142222414).

The spelling of 4021021210 in words is "four billion, twenty-one million, twenty-one thousand, two hundred ten".