1001220212211 has 8 divisors (see below), whose sum is σ = 1338224246160. Its totient is φ = 665848159872.

The previous prime is 1001220212203. The next prime is 1001220212221. The reversal of 1001220212211 is 1122120221001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1001220212211 - 2³ = 1001220212203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1001220212221) 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 7 ways as a sum of consecutive naturals, for example, 407993970 + ... + 407996423.

It is an arithmetic number, because the mean of its divisors is an integer number (167278030770).

Almost surely, 2^{1001220212211} is an apocalyptic number.

1001220212211 is a deficient number, since it is larger than the sum of its proper divisors (337004033949).

1001220212211 is an equidigital number, since it uses as much as digits as its factorization.

1001220212211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 815990805.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1001220212211 its reverse (1122120221001), we get a palindrome (2123340433212).

The spelling of 1001220212211 in words is "one trillion, one billion, two hundred twenty million, two hundred twelve thousand, two hundred eleven".