1001201220211 has 4 divisors (see below), whose sum is σ = 1001285204392. Its totient is φ = 1001117236032.

The previous prime is 1001201220163. The next prime is 1001201220247. The reversal of 1001201220211 is 1120221021001.

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 1001201220211 - 2¹⁵ = 1001201187443 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1001201220191 and 1001201220200.

It is not an unprimeable number, because it can be changed into a prime (1001201224211) 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, 41974206 + ... + 41998051.

It is an arithmetic number, because the mean of its divisors is an integer number (250321301098).

Almost surely, 2^{1001201220211} is an apocalyptic number.

1001201220211 is a deficient number, since it is larger than the sum of its proper divisors (83984181).

1001201220211 is an equidigital number, since it uses as much as digits as its factorization.

1001201220211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83984180.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1001201220211 its reverse (1120221021001), we get a palindrome (2121422241212).

The spelling of 1001201220211 in words is "one trillion, one billion, two hundred one million, two hundred twenty thousand, two hundred eleven".