4000021201 has 4 divisors (see below), whose sum is σ = 4363659504. Its totient is φ = 3636382900.

The previous prime is 4000021199. The next prime is 4000021261. The reversal of 4000021201 is 1021200004.

4000021201 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4000021201 - 2¹ = 4000021199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4000021261) 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, 181819135 + ... + 181819156.

It is an arithmetic number, because the mean of its divisors is an integer number (1090914876).

Almost surely, 2^4000021201 is an apocalyptic number.

It is an amenable number.

4000021201 is a deficient number, since it is larger than the sum of its proper divisors (363638303).

4000021201 is a wasteful number, since it uses less digits than its factorization.

4000021201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363638302.

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

The square root of 4000021201 is about 63245.7208117672. The cubic root of 4000021201 is about 1587.4038565041.

Adding to 4000021201 its reverse (1021200004), we get a palindrome (5021221205).

The spelling of 4000021201 in words is "four billion, twenty-one thousand, two hundred one".