100020051001 has 4 divisors (see below), whose sum is σ = 107713901092. Its totient is φ = 92326200912.

The previous prime is 100020050993. The next prime is 100020051011. The reversal of 100020051001 is 100150020001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19264052025 + 80755998976 = 138795^2 + 284176^2 .

It is a cyclic number.

It is not a de Polignac number, because 100020051001 - 2³ = 100020050993 is a prime.

It is a super-2 number, since 2×100020051001² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100020051011) 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, 3846925026 + ... + 3846925051.

It is an arithmetic number, because the mean of its divisors is an integer number (26928475273).

Almost surely, 2^100020051001 is an apocalyptic number.

It is an amenable number.

100020051001 is a deficient number, since it is larger than the sum of its proper divisors (7693850091).

100020051001 is an equidigital number, since it uses as much as digits as its factorization.

100020051001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7693850090.

The product of its (nonzero) digits is 10, while the sum is 10.

Adding to 100020051001 its reverse (100150020001), we get a palindrome (200170071002).

The spelling of 100020051001 in words is "one hundred billion, twenty million, fifty-one thousand, one".