20011222310203 has 4 divisors (see below), whose sum is σ = 20012353992328. Its totient is φ = 20010090628080.

The previous prime is 20011222310173. The next prime is 20011222310239. The reversal of 20011222310203 is 30201322211002.

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 20011222310203 - 2⁹ = 20011222309691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20011222310243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 565814538 + ... + 565849903.

It is an arithmetic number, because the mean of its divisors is an integer number (5003088498082).

Almost surely, 2^{20011222310203} is an apocalyptic number.

20011222310203 is a deficient number, since it is larger than the sum of its proper divisors (1131682125).

20011222310203 is a wasteful number, since it uses less digits than its factorization.

20011222310203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1131682124.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 20011222310203 its reverse (30201322211002), we get a palindrome (50212544521205).

The spelling of 20011222310203 in words is "twenty trillion, eleven billion, two hundred twenty-two million, three hundred ten thousand, two hundred three".