1001201011 has 4 divisors (see below), whose sum is σ = 1003123224. Its totient is φ = 999278800.

The previous prime is 1001200999. The next prime is 1001201027. The reversal of 1001201011 is 1101021001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1101021001 = 1609 ⋅684289.

It is a cyclic number.

It is not a de Polignac number, because 1001201011 - 2¹⁵ = 1001168243 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1001200985 and 1001201003.

It is not an unprimeable number, because it can be changed into a prime (1001201081) 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 3 ways as a sum of consecutive naturals, for example, 960325 + ... + 961366.

It is an arithmetic number, because the mean of its divisors is an integer number (250780806).

Almost surely, 2^1001201011 is an apocalyptic number.

1001201011 is a deficient number, since it is larger than the sum of its proper divisors (1922213).

1001201011 is an equidigital number, since it uses as much as digits as its factorization.

1001201011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1922212.

The product of its (nonzero) digits is 2, while the sum is 7.

The square root of 1001201011 is about 31641.7605546847. The cubic root of 1001201011 is about 1000.4001768371.

Adding to 1001201011 its reverse (1101021001), we get a palindrome (2102222012).

The spelling of 1001201011 in words is "one billion, one million, two hundred one thousand, eleven".