1001201011211 has 4 divisors (see below), whose sum is σ = 1001839941312. Its totient is φ = 1000562081112.

The previous prime is 1001201011207. The next prime is 1001201011259. The reversal of 1001201011211 is 1121101021001.

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 1001201011211 - 2² = 1001201011207 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1001201011192 and 1001201011201.

It is not an unprimeable number, because it can be changed into a prime (1001201311211) 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, 319462700 + ... + 319465833.

It is an arithmetic number, because the mean of its divisors is an integer number (250459985328).

Almost surely, 2^{1001201011211} is an apocalyptic number.

1001201011211 is a deficient number, since it is larger than the sum of its proper divisors (638930101).

1001201011211 is an equidigital number, since it uses as much as digits as its factorization.

1001201011211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638930100.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 1001201011211 its reverse (1121101021001), we get a palindrome (2122302032212).

The spelling of 1001201011211 in words is "one trillion, one billion, two hundred one million, eleven thousand, two hundred eleven".