100320201 has 10 divisors (see below), whose sum is σ = 149861162. Its totient is φ = 66880080.

The previous prime is 100320197. The next prime is 100320211. The reversal of 100320201 is 102023001.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 91011600 + 9308601 = 9540^2 + 3051^2 .

It is not a de Polignac number, because 100320201 - 2² = 100320197 is a prime.

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

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (100320211) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 619180 + ... + 619341.

Almost surely, 2^100320201 is an apocalyptic number.

It is an amenable number.

100320201 is a deficient number, since it is larger than the sum of its proper divisors (49540961).

100320201 is an equidigital number, since it uses as much as digits as its factorization.

100320201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1238533 (or 1238524 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 100320201 is about 10015.9972543926. The cubic root of 100320201 is about 464.6537693220.

Adding to 100320201 its reverse (102023001), we get a palindrome (202343202).

The spelling of 100320201 in words is "one hundred million, three hundred twenty thousand, two hundred one".