10120020001 has 16 divisors (see below), whose sum is σ = 12613081600. Its totient is φ = 7905688128.

The previous prime is 10120019939. The next prime is 10120020007. The reversal of 10120020001 is 10002002101.

It is not a de Polignac number, because 10120020001 - 2¹³ = 10120011809 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (7).

It is not an unprimeable number, because it can be changed into a prime (10120020007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 696666 + ... + 711043.

It is an arithmetic number, because the mean of its divisors is an integer number (788317600).

Almost surely, 2^10120020001 is an apocalyptic number.

It is an amenable number.

10120020001 is a deficient number, since it is larger than the sum of its proper divisors (2493061599).

10120020001 is a wasteful number, since it uses less digits than its factorization.

10120020001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1407808.

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

Adding to 10120020001 its reverse (10002002101), we get a palindrome (20122022102).

The spelling of 10120020001 in words is "ten billion, one hundred twenty million, twenty thousand, one".