10011012221011 has 4 divisors (see below), whose sum is σ = 10047153059632. Its totient is φ = 9974871382392.

The previous prime is 10011012220919. The next prime is 10011012221027. The reversal of 10011012221011 is 11012221011001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10011012221011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10011012220982 and 10011012221000.

It is not an unprimeable number, because it can be changed into a prime (10011012221051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18070418895 + ... + 18070419448.

It is an arithmetic number, because the mean of its divisors is an integer number (2511788264908).

Almost surely, 2^{10011012221011} is an apocalyptic number.

10011012221011 is a deficient number, since it is larger than the sum of its proper divisors (36140838621).

10011012221011 is an equidigital number, since it uses as much as digits as its factorization.

10011012221011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36140838620.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 10011012221011 its reverse (11012221011001), we get a palindrome (21023233232012).

The spelling of 10011012221011 in words is "ten trillion, eleven billion, twelve million, two hundred twenty-one thousand, eleven".