4002122001 has 4 divisors (see below), whose sum is σ = 5336162672. Its totient is φ = 2668081332.

The previous prime is 4002121999. The next prime is 4002122023. The reversal of 4002122001 is 1002212004.

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 not a de Polignac number, because 4002122001 - 2¹ = 4002121999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4002122401) 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, 667020331 + ... + 667020336.

It is an arithmetic number, because the mean of its divisors is an integer number (1334040668).

Almost surely, 2^4002122001 is an apocalyptic number.

It is an amenable number.

4002122001 is a deficient number, since it is larger than the sum of its proper divisors (1334040671).

4002122001 is a wasteful number, since it uses less digits than its factorization.

4002122001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1334040670.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 4002122001 is about 63262.3268699469. The cubic root of 4002122001 is about 1587.6817078963.

Adding to 4002122001 its reverse (1002212004), we get a palindrome (5004334005).

The spelling of 4002122001 in words is "four billion, two million, one hundred twenty-two thousand, one".