100201000221 has 24 divisors (see below), whose sum is σ = 172602967680. Its totient is φ = 54768247776.

The previous prime is 100201000219. The next prime is 100201000223. The reversal of 100201000221 is 122000102001.

It is an interprime number because it is at equal distance from previous prime (100201000219) and next prime (100201000223).

It is not a de Polignac number, because 100201000221 - 2¹ = 100201000219 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100201000223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34574466 + ... + 34577363.

It is an arithmetic number, because the mean of its divisors is an integer number (7191790320).

Almost surely, 2^100201000221 is an apocalyptic number.

It is an amenable number.

100201000221 is a deficient number, since it is larger than the sum of its proper divisors (72401967459).

100201000221 is a wasteful number, since it uses less digits than its factorization.

100201000221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69151865 (or 69151862 counting only the distinct ones).

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

Adding to 100201000221 its reverse (122000102001), we get a palindrome (222201102222).

The spelling of 100201000221 in words is "one hundred billion, two hundred one million, two hundred twenty-one", and thus it is an aban number.