1000011220203 has 4 divisors (see below), whose sum is σ = 1333348293608. Its totient is φ = 666674146800.

The previous prime is 1000011220163. The next prime is 1000011220211. The reversal of 1000011220203 is 3020221100001.

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

It is not a de Polignac number, because 1000011220203 - 2²¹ = 1000009123051 is a prime.

It is a super-2 number, since 2×1000011220203² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000011260203) 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, 166668536698 + ... + 166668536703.

It is an arithmetic number, because the mean of its divisors is an integer number (333337073402).

Almost surely, 2^{1000011220203} is an apocalyptic number.

1000011220203 is a deficient number, since it is larger than the sum of its proper divisors (333337073405).

1000011220203 is an equidigital number, since it uses as much as digits as its factorization.

1000011220203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333337073404.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 1000011220203 its reverse (3020221100001), we get a palindrome (4020232320204).

The spelling of 1000011220203 in words is "one trillion, eleven million, two hundred twenty thousand, two hundred three".