10120001 has 4 divisors (see below), whose sum is σ = 10141104. Its totient is φ = 10098900.

The previous prime is 10119983. The next prime is 10120021. The reversal of 10120001 is 10002101.

It is a happy number.

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: 10002101 = 43 ⋅232607.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10120001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10120021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9815 + ... + 10796.

It is an arithmetic number, because the mean of its divisors is an integer number (2535276).

Almost surely, 2^10120001 is an apocalyptic number.

It is an amenable number.

10120001 is a deficient number, since it is larger than the sum of its proper divisors (21103).

10120001 is an equidigital number, since it uses as much as digits as its factorization.

10120001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21102.

The product of its (nonzero) digits is 2, while the sum is 5.

The square root of 10120001 is about 3181.1949012910. The cubic root of 10120001 is about 216.3018257067.

Adding to 10120001 its reverse (10002101), we get a palindrome (20122102).

Multiplying 10120001 by its reverse (10002101), we get a palindrome (101221272122101).

It can be divided in two parts, 101 and 20001, that added together give a palindrome (20102).

The spelling of 10120001 in words is "ten million, one hundred twenty thousand, one".