1001210120011 has 4 divisors (see below), whose sum is σ = 1001276226000. Its totient is φ = 1001144014024.

The previous prime is 1001210120003. The next prime is 1001210120039. The reversal of 1001210120011 is 1100210121001.

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 1001210120011 - 2³ = 1001210120003 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1001210120011.

It is not an unprimeable number, because it can be changed into a prime (1001210120051) 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, 33030271 + ... + 33060568.

It is an arithmetic number, because the mean of its divisors is an integer number (250319056500).

Almost surely, 2^{1001210120011} is an apocalyptic number.

1001210120011 is a deficient number, since it is larger than the sum of its proper divisors (66105989).

1001210120011 is an equidigital number, since it uses as much as digits as its factorization.

1001210120011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66105988.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 1001210120011 its reverse (1100210121001), we get a palindrome (2101420241012).

It can be divided in two parts, 1001 and 210120011, that added together give a palindrome (210121012).

The spelling of 1001210120011 in words is "one trillion, one billion, two hundred ten million, one hundred twenty thousand, eleven".