20030101 has 16 divisors (see below), whose sum is σ = 24903424. Its totient is φ = 15686784.

The previous prime is 20030089. The next prime is 20030107. The reversal of 20030101 is 10103002.

It is a cyclic number.

It is not a de Polignac number, because 20030101 - 2⁵ = 20030069 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (7).

It is the 4476-th Hogben number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20030107) by changing a digit.

It is a nontrivial repunit in base 4475.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8305 + ... + 10441.

It is an arithmetic number, because the mean of its divisors is an integer number (1556464).

Almost surely, 2^20030101 is an apocalyptic number.

It is an amenable number.

20030101 is a deficient number, since it is larger than the sum of its proper divisors (4873323).

20030101 is a wasteful number, since it uses less digits than its factorization.

20030101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2260.

The product of its (nonzero) digits is 6, while the sum is 7.

The square root of 20030101 is about 4475.5000837895. The cubic root of 20030101 is about 271.5778712062.

Adding to 20030101 its reverse (10103002), we get a palindrome (30133103).

The spelling of 20030101 in words is "twenty million, thirty thousand, one hundred one".