4121002001 has 4 divisors (see below), whose sum is σ = 4121339904. Its totient is φ = 4120664100.

The previous prime is 4121001991. The next prime is 4121002003. The reversal of 4121002001 is 1002001214.

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 a de Polignac number, because none of the positive numbers 2^k-4121002001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4121002003) 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, 149945 + ... + 175286.

It is an arithmetic number, because the mean of its divisors is an integer number (1030334976).

Almost surely, 2^4121002001 is an apocalyptic number.

It is an amenable number.

4121002001 is a deficient number, since it is larger than the sum of its proper divisors (337903).

4121002001 is a wasteful number, since it uses less digits than its factorization.

4121002001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337902.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 4121002001 is about 64195.0309681365. The cubic root of 4121002001 is about 1603.2488674527.

Adding to 4121002001 its reverse (1002001214), we get a palindrome (5123003215).

The spelling of 4121002001 in words is "four billion, one hundred twenty-one million, two thousand, one".