4000021210 has 32 divisors (see below), whose sum is σ = 7275018240. Its totient is φ = 1583410752.

The previous prime is 4000021199. The next prime is 4000021261. The reversal of 4000021210 is 121200004.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 528372 + ... + 535888.

It is an arithmetic number, because the mean of its divisors is an integer number (227344320).

Almost surely, 2^4000021210 is an apocalyptic number.

4000021210 is a deficient number, since it is larger than the sum of its proper divisors (3274997030).

4000021210 is a wasteful number, since it uses less digits than its factorization.

4000021210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8070.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 4000021210 is about 63245.7208829182. The cubic root of 4000021210 is about 1587.4038576946.

Adding to 4000021210 its reverse (121200004), we get a palindrome (4121221214).

The spelling of 4000021210 in words is "four billion, twenty-one thousand, two hundred ten".