10111221101011 has 4 divisors (see below), whose sum is σ = 10183963699000. Its totient is φ = 10038478503024.

The previous prime is 10111221100999. The next prime is 10111221101021. The reversal of 10111221101011 is 11010112211101.

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 10111221101011 - 2⁵ = 10111221100979 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10111221100982 and 10111221101000.

It is not an unprimeable number, because it can be changed into a prime (10111221101021) 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, 36371298786 + ... + 36371299063.

It is an arithmetic number, because the mean of its divisors is an integer number (2545990924750).

Almost surely, 2^{10111221101011} is an apocalyptic number.

10111221101011 is a deficient number, since it is larger than the sum of its proper divisors (72742597989).

10111221101011 is an equidigital number, since it uses as much as digits as its factorization.

10111221101011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72742597988.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 10111221101011 its reverse (11010112211101), we get a palindrome (21121333312112).

It can be divided in two parts, 10111 and 221101011, that added together give a palindrome (221111122).

The spelling of 10111221101011 in words is "ten trillion, one hundred eleven billion, two hundred twenty-one million, one hundred one thousand, eleven".