1001011002203 has 4 divisors (see below), whose sum is σ = 1001261196408. Its totient is φ = 1000760808000.

The previous prime is 1001011002181. The next prime is 1001011002239. The reversal of 1001011002203 is 3022001101001.

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 1001011002203 - 2³² = 996716034907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1001011092203) 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, 125091101 + ... + 125099102.

It is an arithmetic number, because the mean of its divisors is an integer number (250315299102).

Almost surely, 2^{1001011002203} is an apocalyptic number.

1001011002203 is a deficient number, since it is larger than the sum of its proper divisors (250194205).

1001011002203 is an equidigital number, since it uses as much as digits as its factorization.

1001011002203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250194204.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 1001011002203 its reverse (3022001101001), we get a palindrome (4023012103204).

The spelling of 1001011002203 in words is "one trillion, one billion, eleven million, two thousand, two hundred three".