20100202103 has 4 divisors (see below), whose sum is σ = 20135528160. Its totient is φ = 20064876048.

The previous prime is 20100202099. The next prime is 20100202117. The reversal of 20100202103 is 30120200102.

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 20100202103 - 2² = 20100202099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20100202193) 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, 17662175 + ... + 17663312.

It is an arithmetic number, because the mean of its divisors is an integer number (5033882040).

Almost surely, 2^20100202103 is an apocalyptic number.

20100202103 is a deficient number, since it is larger than the sum of its proper divisors (35326057).

20100202103 is an equidigital number, since it uses as much as digits as its factorization.

20100202103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35326056.

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

Adding to 20100202103 its reverse (30120200102), we get a palindrome (50220402205).

The spelling of 20100202103 in words is "twenty billion, one hundred million, two hundred two thousand, one hundred three".