100506021001 has 4 divisors (see below), whose sum is σ = 105795811600. Its totient is φ = 95216230404.

The previous prime is 100506020981. The next prime is 100506021037. The reversal of 100506021001 is 100120605001.

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.

It is a cyclic number.

It is not a de Polignac number, because 100506021001 - 2¹³ = 100506012809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100506025001) 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, 2644895271 + ... + 2644895308.

It is an arithmetic number, because the mean of its divisors is an integer number (26448952900).

Almost surely, 2^100506021001 is an apocalyptic number.

It is an amenable number.

100506021001 is a deficient number, since it is larger than the sum of its proper divisors (5289790599).

100506021001 is an equidigital number, since it uses as much as digits as its factorization.

100506021001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5289790598.

The product of its (nonzero) digits is 60, while the sum is 16.

Adding to 100506021001 its reverse (100120605001), we get a palindrome (200626626002).

The spelling of 100506021001 in words is "one hundred billion, five hundred six million, twenty-one thousand, one".