20110021010203 has 4 divisors (see below), whose sum is σ = 20110366642968. Its totient is φ = 20109675377440.

The previous prime is 20110021010201. The next prime is 20110021010207. The reversal of 20110021010203 is 30201012001102.

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 20110021010203 - 2¹ = 20110021010201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20110021010201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172729093 + ... + 172845478.

It is an arithmetic number, because the mean of its divisors is an integer number (5027591660742).

Almost surely, 2^{20110021010203} is an apocalyptic number.

20110021010203 is a deficient number, since it is larger than the sum of its proper divisors (345632765).

20110021010203 is an equidigital number, since it uses as much as digits as its factorization.

20110021010203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345632764.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 20110021010203 its reverse (30201012001102), we get a palindrome (50311033011305).

The spelling of 20110021010203 in words is "twenty trillion, one hundred ten billion, twenty-one million, ten thousand, two hundred three".