10001220100211 has 4 divisors (see below), whose sum is σ = 10002731093400. Its totient is φ = 9999709107024.

The previous prime is 10001220100177. The next prime is 10001220100283. The reversal of 10001220100211 is 11200102210001.

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 10001220100211 - 2¹⁰ = 10001220099187 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10001220100192 and 10001220100201.

It is not an unprimeable number, because it can be changed into a prime (10001220106211) 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, 755486666 + ... + 755499903.

It is an arithmetic number, because the mean of its divisors is an integer number (2500682773350).

Almost surely, 2^{10001220100211} is an apocalyptic number.

10001220100211 is a deficient number, since it is larger than the sum of its proper divisors (1510993189).

10001220100211 is an equidigital number, since it uses as much as digits as its factorization.

10001220100211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1510993188.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 10001220100211 its reverse (11200102210001), we get a palindrome (21201322310212).

The spelling of 10001220100211 in words is "ten trillion, one billion, two hundred twenty million, one hundred thousand, two hundred eleven".