1001220222001 has 4 divisors (see below), whose sum is σ = 1016163807472. Its totient is φ = 986276636532.

The previous prime is 1001220221993. The next prime is 1001220222007. The reversal of 1001220222001 is 1002220221001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1001220222001 - 2³ = 1001220221993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1001220222007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7471792635 + ... + 7471792768.

It is an arithmetic number, because the mean of its divisors is an integer number (254040951868).

Almost surely, 2^{1001220222001} is an apocalyptic number.

It is an amenable number.

1001220222001 is a deficient number, since it is larger than the sum of its proper divisors (14943585471).

1001220222001 is an equidigital number, since it uses as much as digits as its factorization.

1001220222001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14943585470.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1001220222001 its reverse (1002220221001), we get a palindrome (2003440443002).

It can be divided in two parts, 1001220 and 222001, that added together give a palindrome (1223221).

The spelling of 1001220222001 in words is "one trillion, one billion, two hundred twenty million, two hundred twenty-two thousand, one".