1001222220203 has 4 divisors (see below), whose sum is σ = 1001849161200. Its totient is φ = 1000595279208.

The previous prime is 1001222220161. The next prime is 1001222220241. The reversal of 1001222220203 is 3020222221001.

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 1001222220203 - 2⁶ = 1001222220139 is a prime.

It is a super-2 number, since 2×1001222220203² (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 (1001222220253) 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, 313468103 + ... + 313471296.

It is an arithmetic number, because the mean of its divisors is an integer number (250462290300).

Almost surely, 2^{1001222220203} is an apocalyptic number.

1001222220203 is a deficient number, since it is larger than the sum of its proper divisors (626940997).

1001222220203 is an equidigital number, since it uses as much as digits as its factorization.

1001222220203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626940996.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 1001222220203 its reverse (3020222221001), we get a palindrome (4021444441204).

The spelling of 1001222220203 in words is "one trillion, one billion, two hundred twenty-two million, two hundred twenty thousand, two hundred three".