2120100203 has 4 divisors (see below), whose sum is σ = 2283184848. Its totient is φ = 1957015560.

The previous prime is 2120100197. The next prime is 2120100263. The reversal of 2120100203 is 3020010212.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2120100203 - 2⁶ = 2120100139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2120100263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81542303 + ... + 81542328.

It is an arithmetic number, because the mean of its divisors is an integer number (570796212).

Almost surely, 2^2120100203 is an apocalyptic number.

2120100203 is a deficient number, since it is larger than the sum of its proper divisors (163084645).

2120100203 is a wasteful number, since it uses less digits than its factorization.

2120100203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163084644.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 2120100203 is about 46044.5458550739. The cubic root of 2120100203 is about 1284.6518970078.

Adding to 2120100203 its reverse (3020010212), we get a palindrome (5140110415).

The spelling of 2120100203 in words is "two billion, one hundred twenty million, one hundred thousand, two hundred three".