100210401 has 6 divisors (see below), whose sum is σ = 144748370. Its totient is φ = 66806928.

The previous prime is 100210381. The next prime is 100210403. The reversal of 100210401 is 104012001.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 99980001 + 230400 = 9999^2 + 480^2 .

It is not a de Polignac number, because 100210401 - 2¹⁸ = 99948257 is a prime.

It is a super-3 number, since 3×100210401³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 11134489 = 100210401 / (1 + 0 + 0 + 2 + 1 + 0 + 4 + 0 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100210403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5567236 + ... + 5567253.

Almost surely, 2^100210401 is an apocalyptic number.

It is an amenable number.

100210401 is a deficient number, since it is larger than the sum of its proper divisors (44537969).

100210401 is a wasteful number, since it uses less digits than its factorization.

100210401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11134495 (or 11134492 counting only the distinct ones).

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

The square root of 100210401 is about 10010.5145222411. The cubic root of 100210401 is about 464.4841869646.

Adding to 100210401 its reverse (104012001), we get a palindrome (204222402).

The spelling of 100210401 in words is "one hundred million, two hundred ten thousand, four hundred one".