100002221001 has 60 divisors (see below), whose sum is σ = 154350806016. Its totient is φ = 64518793920.

The previous prime is 100002220999. The next prime is 100002221009. The reversal of 100002221001 is 100122200001.

It is not a de Polignac number, because 100002221001 - 2¹ = 100002220999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (100002221009) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 17289556 + ... + 17295338.

Almost surely, 2^100002221001 is an apocalyptic number.

It is an amenable number.

100002221001 is a deficient number, since it is larger than the sum of its proper divisors (54348585015).

100002221001 is an equidigital number, since it uses as much as digits as its factorization.

100002221001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6004 (or 5954 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 100002221001 its reverse (100122200001), we get a palindrome (200124421002).

The spelling of 100002221001 in words is "one hundred billion, two million, two hundred twenty-one thousand, one".