10120002001 has 4 divisors (see below), whose sum is σ = 10560002112. Its totient is φ = 9680001892.

The previous prime is 10120001993. The next prime is 10120002007. The reversal of 10120002001 is 10020002101.

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, and also an emirpimes, since its reverse is a distinct semiprime: 10020002101 = 643 ⋅15583207.

It is a cyclic number.

It is not a de Polignac number, because 10120002001 - 2³ = 10120001993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10120002007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220000021 + ... + 220000066.

It is an arithmetic number, because the mean of its divisors is an integer number (2640000528).

Almost surely, 2^10120002001 is an apocalyptic number.

It is an amenable number.

10120002001 is a deficient number, since it is larger than the sum of its proper divisors (440000111).

10120002001 is an equidigital number, since it uses as much as digits as its factorization.

10120002001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440000110.

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 10120002001 its reverse (10020002101), we get a palindrome (20140004102).

The spelling of 10120002001 in words is "ten billion, one hundred twenty million, two thousand, one".