1001212212203 has 16 divisors (see below), whose sum is σ = 1176904054464. Its totient is φ = 833754280320.

The previous prime is 1001212212197. The next prime is 1001212212211. The reversal of 1001212212203 is 3022122121001.

It is a cyclic number.

It is not a de Polignac number, because 1001212212203 - 2³⁰ = 1000138470379 is a prime.

It is a super-2 number, since 2×1001212212203² (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 (1001212212233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2679668 + ... + 3030353.

It is an arithmetic number, because the mean of its divisors is an integer number (73556503404).

Almost surely, 2^{1001212212203} is an apocalyptic number.

1001212212203 is a deficient number, since it is larger than the sum of its proper divisors (175691842261).

1001212212203 is an equidigital number, since it uses as much as digits as its factorization.

1001212212203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5710742.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 1001212212203 its reverse (3022122121001), we get a palindrome (4023334333204).

The spelling of 1001212212203 in words is "one trillion, one billion, two hundred twelve million, two hundred twelve thousand, two hundred three".