20001122111203 has 4 divisors (see below), whose sum is σ = 20051000221608. Its totient is φ = 19951244000800.

The previous prime is 20001122111161. The next prime is 20001122111237. The reversal of 20001122111203 is 30211122110002.

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 20001122111203 - 2¹⁷ = 20001121980131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20001122111263) 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, 24939054601 + ... + 24939055402.

It is an arithmetic number, because the mean of its divisors is an integer number (5012750055402).

Almost surely, 2^{20001122111203} is an apocalyptic number.

20001122111203 is a deficient number, since it is larger than the sum of its proper divisors (49878110405).

20001122111203 is an equidigital number, since it uses as much as digits as its factorization.

20001122111203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49878110404.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 20001122111203 its reverse (30211122110002), we get a palindrome (50212244221205).

The spelling of 20001122111203 in words is "twenty trillion, one billion, one hundred twenty-two million, one hundred eleven thousand, two hundred three".